[Iaude] MPEC B143: COMET P/2011 NO1 = P/2023 WM26 (Elenin)
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Sat Jan 27 21:03:07 EST 2024
M.P.E.C. 2024-B143 Issued 2024 January 28, 01:59 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets, routine data on comets and natural satellites,
and occasional editorial announcements. They are published
on behalf of Division F of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
COMET P/2011 NO1 = P/2023 WM26 (Elenin)
An object detected on images taken on 2023 Nov. 18 UT by Pan-STARRS 2 (F52)
and initially reported as unclassified was assigned the designation 2023 WM26.
H. Sato was the first to suggest this was actually comet P/2011 NO1, noting a
strongly condensed with a coma of 5" in diameter in images taken 2023 Dec. 23
from iTelescope Deep Sky Chile (X07).
Observations:
PK23W26M C2023 10 17.59024008 07 22.986+25 41 10.03 22.48GVEB143F51
PK23W26M C2023 10 17.60242808 07 23.867+25 41 06.07 23.32GVEB143F51
PK23W26M C2023 10 24.60578608 15 41.882+25 04 34.88 22.58GVEB143F51
PK23W26M C2023 10 24.61421308 15 42.441+25 04 32.28 22.70GVEB143F51
PK23W26M C2023 10 24.62265608 15 43.018+25 04 29.50 22.41GVEB143F51
PK23W26M C2023 11 12.57442008 35 34.269+23 15 38.89 22.04GVEB143F52
PK23W26M C2023 11 12.58555308 35 34.876+23 15 34.08 22.04GVEB143F52
PK23W26M C2023 11 12.59670708 35 35.482+23 15 30.24 21.57GVEB143F52
PK23W26M* C2023 11 18.56288508 40 49.184+22 38 16.28 21.79wXEB143F52
PK23W26M C2023 11 18.57518208 40 49.775+22 38 11.63 21.99wXEB143F52
PK23W26M C2023 11 18.58762808 40 50.368+22 38 06.93 21.83wXEB143F52
PK23W26M C2023 12 07.48199408 52 56.195+20 29 35.88 21.05wXEB143F52
PK23W26M C2023 12 07.49358708 52 56.492+20 29 30.76 21.08wXEB143F52
PK23W26M C2023 12 07.50525008 52 56.760+20 29 25.80 20.94wXEB143F52
PK23W26M C2023 12 13.44207308 54 59.281+19 45 03.21 20.58wXEB143F52
PK23W26M C2023 12 13.45502308 54 59.434+19 44 57.55 20.63wXEB143F52
PK23W26M C2023 12 13.46796808 54 59.608+19 44 51.58 20.80wXEB143F52
PK23W26M C2023 12 13.48090508 54 59.778+19 44 45.83 20.60wXEB143F52
PK23W26M KB2023 12 18.01777208 55 51.510+19 09 10.68 20.8 VZEB143Y89
PK23W26M KB2023 12 18.03271408 55 51.552+19 09 03.80 20.2 VZEB143Y89
PK23W26M KB2023 12 18.04699708 55 51.644+19 08 56.49 20.5 VZEB143Y89
PK23W26M 0C2023 12 23.33398 08 56 01.74 +18 25 31.2 VEB143X07
PK23W26M 0C2023 12 23.34041 08 56 01.69 +18 25 27.9 19.9 GVEB143X07
PK23W26M C2023 12 24.41455008 55 57.322+18 16 11.09 20.26iXEB143F52
PK23W26M C2023 12 24.42806508 55 57.199+18 16 04.35 19.82iXEB143F52
PK23W26M C2023 12 24.44160308 55 57.090+18 15 57.63 19.75iXEB143F52
PK23W26M C2023 12 24.45515408 55 56.991+18 15 50.81 19.93iXEB143F52
PK23W26M C2024 01 02.56561008 53 34.195+16 52 53.04 19.61wXEB143F51
PK23W26M C2024 01 02.57910008 53 33.797+16 52 45.17 19.61wXEB143F51
PK23W26M C2024 01 02.59260208 53 33.402+16 52 37.39 19.68wXEB143F51
PK23W26M C2024 01 02.60607908 53 33.008+16 52 29.32 19.71wXEB143F51
PK23W26M KC2024 01 05.15499708 52 19.51 +16 27 20.3 18.9 GXEB143W62
PK23W26M KC2024 01 05.16692508 52 19.11 +16 27 13.3 19.0 GXEB143W62
PK23W26M KC2024 01 05.17815108 52 18.72 +16 27 06.8 19.0 GXEB143W62
PK23W26M C2024 01 05.46659908 52 09.290+16 24 16.92 19.19oVEB143T05
PK23W26M C2024 01 05.46840808 52 09.137+16 24 14.87 19.04oVEB143T05
PK23W26M C2024 01 05.47157208 52 09.038+16 24 12.85 18.95oVEB143T05
PK23W26M C2024 01 05.47688708 52 08.923+16 24 10.73 19.22oVEB143T05
PK23W26M KC2024 01 05.66071 08 52 02.75 +16 22 16.1 qEB143Q11
PK23W26M KC2024 01 05.66654 08 52 02.54 +16 22 12.7 qEB143Q11
PK23W26M KC2024 01 05.67291 08 52 02.32 +16 22 08.7 18.8 TqEB143Q11
PK23W26M C2024 01 06.46721508 51 35.158+16 14 06.83 18.89oVEB143T08
PK23W26M C2024 01 06.47043708 51 35.050+16 14 04.81 19.12oVEB143T08
PK23W26M C2024 01 06.47320908 51 34.860+16 14 02.94 19.05oVEB143T08
PK23W26M C2024 01 06.48319608 51 34.565+16 13 57.40 18.49oVEB143T08
PK23W26M C2024 01 08.47159608 50 19.685+15 53 19.97 18.54oVEB143T05
PK23W26M C2024 01 08.47340408 50 19.567+15 53 18.13 18.60oVEB143T05
PK23W26M C2024 01 08.52335308 50 17.441+15 52 46.92 18.52oVEB143T05
PK23W26M C2024 01 08.54957308 50 16.282+15 52 30.32 18.35oVEB143T05
PK23W26M KC2024 01 09.10404608 49 53.592+15 46 33.53 19.1 GXEB143G01
PK23W26M KC2024 01 09.10630608 49 53.578+15 46 32.45 19.0 GXEB143G01
PK23W26M KC2024 01 09.10808608 49 53.477+15 46 31.08 18.7 GXEB143G01
PK23W26M KB2024 01 10.10216 08 49 10.944+15 35 53.38 18.3 GXEB143K87
PK23W26M KB2024 01 10.10948 08 49 10.622+15 35 48.30 18.3 GXEB143K87
PK23W26M KB2024 01 10.11678 08 49 10.262+15 35 43.26 18.4 GXEB143K87
PK23W26M C2024 01 10.21255008 49 06.382+15 34 51.74 18.54oVEB143W68
PK23W26M C2024 01 10.21435808 49 06.353+15 34 52.82 18.20oVEB143W68
PK23W26M C2024 01 10.24980508 49 04.610+15 34 28.70 18.36oVEB143W68
PK23W26M C2024 01 10.26966508 49 03.614+15 34 15.42 18.10oVEB143W68
PK23W26M KB2024 01 11.03067 08 48 29.222+15 25 48.11 18.8 GXEB143K87
PK23W26M KB2024 01 11.03726 08 48 28.915+15 25 42.67 18.2 GXEB143K87
PK23W26M KB2024 01 11.04384 08 48 28.627+15 25 38.93 18.7 GXEB143K87
PK23W26M 1C2024 01 11.31997508 48 15.952+15 22 39.76 18.43GVEB143G96
PK23W26M 1C2024 01 11.32511808 48 15.707+15 22 36.37 18.49GVEB143G96
PK23W26M 1C2024 01 11.33025708 48 15.448+15 22 33.06 18.48GVEB143G96
PK23W26M 1C2024 01 11.33542008 48 15.185+15 22 29.53 18.47GVEB143G96
PK23W26M C2024 01 11.45756108 48 09.478+15 21 10.19 18.24oVEB143T08
PK23W26M C2024 01 11.45940808 48 09.355+15 21 09.68 18.34oVEB143T08
PK23W26M C2024 01 11.46218308 48 09.216+15 21 07.92 18.58oVEB143T08
PK23W26M C2024 01 11.48706408 48 07.958+15 20 51.18 18.23oVEB143T08
PK23W26M KC2024 01 12.88409 08 46 59.946+15 05 16.32 18.2 GXEB143088
PK23W26M KC2024 01 12.88772 08 46 59.754+15 05 13.88 18.2 GXEB143088
PK23W26M KC2024 01 12.89135 08 46 59.559+15 05 11.45 18.2 GXEB143088
PK23W26M KC2024 01 12.96434308 46 55.79 +15 04 19.7 17.7 GVEB143G17
PK23W26M KB2024 01 12.97702 08 46 55.14 +15 04 11.5 17.7 GXEB143K19
PK23W26M KB2024 01 12.98064 08 46 54.95 +15 04 09.0 17.6 GXEB143K19
PK23W26M KB2024 01 12.98425 08 46 54.75 +15 04 06.4 17.7 GXEB143K19
PK23W26M KC2024 01 12.98530208 46 54.67 +15 04 05.6 17.8 GVEB143G17
PK23W26M KC2024 01 12.98586 08 46 54.65 +15 04 05.3 17.9 GXEB143K83
PK23W26M KC2024 01 12.99876 08 46 53.94 +15 03 56.4 17.9 GXEB143K83
PK23W26M KC2024 01 13.00626408 46 53.55 +15 03 51.7 17.8 GVEB143G17
PK23W26M KC2024 01 13.01357 08 46 53.14 +15 03 46.6 17.8 GXEB143K83
PK23W26M C2024 01 14.50125208 45 34.786+14 46 51.64 16.27oVEB143T08
PK23W26M C2024 01 14.50443608 45 34.610+14 46 49.33 16.35oVEB143T08
PK23W26M C2024 01 14.53852208 45 32.623+14 46 25.86 16.32oVEB143T08
PK23W26M C2024 01 14.56723608 45 30.953+14 46 05.56 16.26oVEB143T08
PK23W26M KC2024 01 15.13064008 45 00.71 +14 39 29.8 16.8 GXEB143W62
PK23W26M KC2024 01 15.13961808 45 00.19 +14 39 23.6 16.8 GXEB143W62
PK23W26M KC2024 01 15.14806308 44 59.70 +14 39 17.5 16.8 GXEB143W62
PK23W26M C2024 01 15.50762508 44 39.026+14 35 08.92 16.38oVEB143T08
PK23W26M C2024 01 15.51198308 44 38.794+14 35 06.04 17.17oVEB143T08
PK23W26M C2024 01 15.54385508 44 36.852+14 34 43.18 16.46oVEB143T08
PK23W26M KB2024 01 15.92163 08 44 15.92 +14 30 13.0 18.6 GWEB143130
PK23W26M KB2024 01 15.92642 08 44 15.49 +14 30 09.4 18.2 GWEB143130
PK23W26M KB2024 01 15.93141 08 44 15.33 +14 30 04.8 18.4 GWEB143130
PK23W26M KB2024 01 15.93608 08 44 14.99 +14 30 02.3 18.5 GWEB143130
PK23W26M KC2024 01 15.93649108 44 15.005+14 30 01.37 17.2 GVEB143Z80
PK23W26M KC2024 01 15.94248708 44 14.676+14 29 56.98 17.3 GVEB143Z80
PK23W26M C2024 01 16.06192 08 44 07.26 +14 28 44.9 17.1 GVEB143L09
PK23W26M C2024 01 16.06405 08 44 07.13 +14 28 43.3 17.0 GVEB143L09
PK23W26M C2024 01 16.06617 08 44 07.01 +14 28 41.9 17.0 GVEB143L09
PK23W26M C2024 01 16.22110 08 43 58.63 +14 26 40.9 17.3 GUEB143V16
PK23W26M C2024 01 16.22678 08 43 58.38 +14 26 38.3 17.1 GUEB143V16
PK23W26M C2024 01 16.23449 08 43 57.88 +14 26 32.1 17.6 GUEB143V16
PK23W26M C2024 01 16.24141 08 43 57.47 +14 26 25.3 17.4 GUEB143V16
PK23W26M 1C2024 01 16.40715508 43 47.220+14 24 29.30 16.45GVEB143703
PK23W26M 1C2024 01 16.40921208 43 47.080+14 24 27.90 16.50GVEB143703
PK23W26M 1C2024 01 16.41127908 43 46.950+14 24 26.20 16.54GVEB143703
PK23W26M 1C2024 01 16.41333408 43 46.820+14 24 24.60 16.54GVEB143703
PK23W26M KC2024 01 16.60494408 43 35.909+14 22 06.85 16.4 VqEB143Q21
PK23W26M KC2024 01 16.62737008 43 34.555+14 21 50.44 16.7 VqEB143Q21
PK23W26M V2024 01 16.72610 08 43 28.853+14 20 44.20 15.6 GXEB143247
PK23W26M v2024 01 16.72610 1 100.7298 +13.5788 11 EB143247
PK23W26M V2024 01 16.74140 08 43 27.876+14 20 33.72 16.7 GXEB143247
PK23W26M v2024 01 16.74140 1 100.7298 +13.5788 11 EB143247
PK23W26M V2024 01 16.74402 08 43 27.742+14 20 32.10 15.6 GXEB143247
PK23W26M v2024 01 16.74402 1 100.7298 +13.5788 11 EB143247
PK23W26M KC2024 01 16.88503408 43 19.603+14 18 43.70 18.2 GVEB143Z80
PK23W26M KC2024 01 16.89278408 43 19.099+14 18 37.62 17.6 GVEB143Z80
PK23W26M KC2024 01 16.90041708 43 18.643+14 18 32.54 17.7 GVEB143Z80
PK23W26M KC2024 01 16.92134 08 43 17.342+14 18 17.86 17.5 GVEB143C23
PK23W26M KC2024 01 16.92712 08 43 16.970+14 18 13.46 17.5 GVEB143C23
PK23W26M KC2024 01 16.93288 08 43 16.622+14 18 09.79 17.0 GVEB143C23
PK23W26M KB2024 01 16.93603 08 43 16.37 +14 18 08.0 17.8 GXEB143G00
PK23W26M KC2024 01 16.93866 08 43 16.308+14 18 05.40 17.1 GVEB143C23
PK23W26M KB2024 01 16.94530 08 43 15.78 +14 18 01.2 17.9 GXEB143G00
PK23W26M KB2024 01 16.95395 08 43 15.23 +14 17 55.1 17.9 GXEB143G00
PK23W26M :C2024 01 17.92927 08 42 16.34 +14 06 09.5 17.3 VqEB143950
PK23W26M :C2024 01 17.94924 08 42 15.07 +14 05 55.1 17.1 VqEB143950
PK23W26M :C2024 01 17.96881 08 42 13.81 +14 05 40.9 17.2 VqEB143950
PK23W26M KC2024 01 17.97263308 42 13.322+14 05 34.84 17.3 GVEB143Z80
PK23W26M KC2024 01 17.98052208 42 12.818+14 05 29.11 17.7 GVEB143Z80
PK23W26M KC2024 01 17.98250208 42 12.710+14 05 27.67 17.3 GVEB143Z80
PK23W26M C2024 01 18.25126208 41 55.793+14 02 23.68 16.97oVEB143W68
PK23W26M C2024 01 18.25490508 41 55.543+14 02 21.30 16.96oVEB143W68
PK23W26M C2024 01 18.26351808 41 54.965+14 02 14.75 16.80oVEB143W68
PK23W26M C2024 01 18.29627908 41 52.790+14 01 50.66 16.83oVEB143W68
PK23W26M KB2024 01 18.86154 08 41 17.702+13 54 51.44 16.8 GXEB143L87
PK23W26M KB2024 01 18.86764 08 41 17.316+13 54 47.02 16.7 GXEB143L87
PK23W26M KB2024 01 18.87374 08 41 16.956+13 54 42.98 16.7 GXEB143L87
PK23W26M KC2024 01 18.96738508 41 10.711+13 53 21.12 16.8 GVEB143Z80
PK23W26M KC2024 01 18.97526008 41 10.162+13 53 15.72 16.8 GVEB143Z80
PK23W26M C2024 01 19.49382408 40 36.444+13 46 53.83 16.91oVEB143T05
PK23W26M C2024 01 19.49665508 40 36.247+13 46 51.53 16.65oVEB143T05
PK23W26M C2024 01 19.50343508 40 35.774+13 46 46.49 17.28oVEB143T05
PK23W26M C2024 01 19.51407508 40 35.038+13 46 38.50 16.68oVEB143T05
PK23W26M KB2024 01 20.00289 08 40 03.11 +13 40 26.1 17.2 GXEB143G00
PK23W26M KB2024 01 20.01128 08 40 02.53 +13 40 20.0 17.1 GXEB143G00
PK23W26M KB2024 01 20.01913 08 40 01.99 +13 40 14.0 17.1 GXEB143G00
PK23W26M C2024 01 20.06211108 39 58.901+13 39 53.75 16.98cVEB143M22
PK23W26M C2024 01 20.06668808 39 58.594+13 39 50.18 16.94cVEB143M22
PK23W26M C2024 01 20.07737608 39 57.845+13 39 42.41 16.98cVEB143M22
PK23W26M C2024 01 20.08692908 39 57.209+13 39 34.85 17.05cVEB143M22
PK23W26M 1C2024 01 20.17781 08 39 51.670+13 38 26.63 16.5 GVEB143W88
PK23W26M 1C2024 01 20.20447 08 39 49.829+13 38 06.40 16.6 GVEB143W88
PK23W26M 1C2024 01 20.21978 08 39 48.768+13 37 55.56 16.7 GVEB143W88
PK23W26M KC2024 01 20.83983408 39 07.45 +13 29 47.8 17.6 GVEB143G34
PK23W26M KC2024 01 20.84581008 39 07.07 +13 29 44.8 16.3 GVEB143G34
PK23W26M KC2024 01 20.85378908 39 06.46 +13 29 38.6 16.3 GVEB143G34
PK23W26M KC2024 01 20.85977808 39 06.07 +13 29 33.1 17.7 GVEB143G34
PK23W26M KC2024 01 20.94499708 39 00.08 +13 28 30.1 17.6 GVEB143G17
PK23W26M KC2024 01 20.95418208 38 59.46 +13 28 23.1 17.7 GVEB143G17
PK23W26M KC2024 01 20.96336508 38 58.77 +13 28 15.8 17.9 GVEB143G17
PK23W26M KB2024 01 21.06613 08 38 51.528+13 26 56.54 16.9 GXEB143K87
PK23W26M KB2024 01 21.07052 08 38 51.168+13 26 52.73 16.9 GXEB143K87
PK23W26M KB2024 01 21.07491 08 38 50.897+13 26 49.34 17.2 GXEB143K87
PK23W26M KB2024 01 21.12333 08 38 48.20 +13 26 15.4 17.1 GXEB143W42
PK23W26M KB2024 01 21.12804 08 38 47.89 +13 26 11.5 16.8 GXEB143W42
PK23W26M KB2024 01 21.13266 08 38 47.55 +13 26 08.2 17.5 GXEB143W42
PK23W26M C2024 01 21.15867 08 38 44.97 +13 25 47.3 16.6 VqEB143K77
PK23W26M C2024 01 21.16589 08 38 44.59 +13 25 43.8 16.7 VqEB143K77
PK23W26M C2024 01 21.39553408 38 29.354+13 22 47.32 16.84oVEB143T05
PK23W26M C2024 01 21.39896108 38 29.119+13 22 44.54 16.83oVEB143T05
PK23W26M C2024 01 21.40213008 38 28.874+13 22 42.06 17.19oVEB143T05
PK23W26M C2024 01 21.41422408 38 28.003+13 22 32.77 16.58oVEB143T05
PK23W26M C2024 01 22.15875008 37 36.190+13 13 02.78 17.02oVEB143W68
PK23W26M C2024 01 22.18976608 37 33.883+13 12 38.34 16.66oVEB143W68
PK23W26M C2024 01 22.19303108 37 33.641+13 12 36.00 16.85oVEB143W68
PK23W26M C2024 01 22.19997608 37 33.134+13 12 30.46 17.14oVEB143W68
PK23W26M KC2024 01 22.92072808 36 42.086+13 02 50.17 16.95RqEB143Z80
PK23W26M KC2024 01 22.92661708 36 41.642+13 02 45.35 17.27RqEB143Z80
PK23W26M KC2024 01 23.91521808 35 29.67 +12 49 39.9 16.6 GXEB143595
PK23W26M KC2024 01 23.91859508 35 29.43 +12 49 36.8 16.8 GXEB143595
PK23W26M KC2024 01 23.92159908 35 29.19 +12 49 34.7 16.7 GXEB143595
PK23W26M KC2024 01 23.92460108 35 28.99 +12 49 32.2 16.6 GXEB143595
PK23W26M KC2024 01 23.92760308 35 28.76 +12 49 29.9 16.6 GXEB143595
PK23W26M KC2024 01 26.97407 08 31 36.617+12 07 48.00 16.8 RZEB143C23
PK23W26M KC2024 01 26.97697 08 31 36.326+12 07 46.13 16.7 RZEB143C23
PK23W26M KC2024 01 26.97985 08 31 36.149+12 07 43.43 16.5 RZEB143C23
PK23W26M KC2024 01 27.87988 08 30 25.08 +11 55 05.1 17.0 GVEB143104
PK23W26M KC2024 01 27.88723 08 30 24.47 +11 54 58.9 17.0 GVEB143104
PK23W26M KC2024 01 27.89458 08 30 23.87 +11 54 52.6 16.9 GVEB143104
Observer details:
088 Kottomia. Observers A. Taky, A. Abdelaziz, S. Tealib, M. Abouiesha.
Measurer L. Elenin. 1.88-m f/4.9 reflector + CCD.
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri, M. D.
Grazia. Measurers P. Bacci, L. Tesi, G. Fagioli. 0.60-m F4 Reflector +
CCD.
130 Lumezzane. Observers A. Coffano, W. Marinello, M. Micheli, G. Pizzetti,
A. Soffiantini. Measurers A. Coffano, W. Marinello. 0.40-m f/6 reflector
+ CMO.
247 Roving Observer. Observer N. Tirawat. 0.20-m f/4.0 reflector + CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.61-m f/4.5 reflector + CCD.
703 Catalina Sky Survey. Observers T. Beuden, D. Rankin. Measurers T.
Beuden, V. F. Carvajal, D. Fay, J. B. Fazekas, D. C. Fuls, A. R. Gibbs, A.
D. Grauer, H. Groeller, J. K. Hogan, R. A. Kowalski, S. M. Larson, G. J.
Leonard, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 0.68-m
Schmidt + 10K CCD.
950 La Palma. Observer M. Masek. 0.25-m f/6.8 reflector + CCD.
C23 Olmen. Observer A. Diepvens. 0.2-m f/9.0 Refractor + CCD + CCD, 0.20-m
f/6.75 Refractor + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Herman, T. Lowe, P. Minguez, A.
Schultz, I. Smith. Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
Weryk. 1.8-m Ritchey-Chretien + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Herman, T. Lowe, P. Minguez, A.
Schultz, I. Smith. Measurers K. Chambers, T. de Boer, J. Fairlamb, H.
Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R. Wainscoat, R.
Weryk. 1.8-m Ritchey-Chretien + CCD.
G00 AZM Martinsberg, Oed. Observers M. Jaeger, E. Prosperi. Measurer M.
Jaeger. 0.30-m f/4.0 reflector + CMO.
G01 Universitaetssternwarte Oldenburg. Observer T. Hoffmann. 0.40-m f/5.8
Ritchey-Chretien + CCD.
G17 BAS Observatory, Scandicci. Observer L. Grazzini. 0.20-m f/10 Schmidt-
Cassegrain + CCD + f/6.3 focal reducer.
G34 Oberfrauendorf. Observer T. Felber. 0.35-m f/6.3 Schmidt-Cassegrain +
CCD.
G96 Mt. Lemmon Survey. Observer J. K. Hogan. Measurers T. Beuden, V. F.
Carvajal, D. Fay, J. B. Fazekas, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H.
Groeller, J. K. Hogan, R. A. Kowalski, S. M. Larson, G. J. Leonard, D.
Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.5-m reflector +
10K CCD.
K19 PASTIS Observatory, Banon. Observer C. Demeautis. 0.28-m f/2.2 reflector
+ CMO.
K77 EHB01 Observatory, Engelhardsberg. Observer R. Fichtl. 0.40-m f/2.6
reflector + CCD.
K83 Beppe Forti Astronomical Observatory, Montelupo. Observers M. Tombelli,
G. Ferrini, G. Fieramosca, A. Mazzanti, A. Squilloni, F. Cheli, L.
Grazzini, G. Interranrte, G. Bimbi, M. Calamadrei. Measurers M. Tombelli,
F. Bernardi. 0.40-m f/8 Ritchey-Chretien + CCD.
K87 Dettelbach Vineyard Observatory. Observer B. Haeusler. 0.30-m f/8.0
Schmidt-Cassegrain + CMO + CMO.
L09 Sutherland-LCO Aqawan A #1. Observer A. Hale. 0.35-m f/3 Cassegrain +
CCD.
L87 Moonbase South Observatory, Hakos. Observer G. Duszanowicz. 0.28-m f/1.9
reflector + CMO.
M22 ATLAS South Africa, Sutherland. Observers L. Denneau, R. Siverd, J.
Tonry, H. Weiland. Measurers L. Denneau, N. Erasmus, A. Fitzsimmons, A.
Lawrence, J. Robinson, R. Siverd, J. Tonry, H. Weiland. 0.5-m Reflector +
CCD.
Q11 Shinshiro. Observer T. Ikemura. Measurer H. Sato.
Q21 Southern Utsunomiya. Observer H. Nohara. 0.4-m f/3.8 Astrograph + CCD.
T05 ATLAS-HKO, Haleakala. Observers L. Denneau, R. Siverd, J. Tonry, H.
Weiland. Measurers L. Denneau, N. Erasmus, A. Fitzsimmons, A. Lawrence,
J. Robinson, R. Siverd, J. Tonry, H. Weiland. 0.5-m Reflector + CCD.
T08 ATLAS-MLO, Mauna Loa. Observers L. Denneau, R. Siverd, J. Tonry, H.
Weiland. Measurers L. Denneau, N. Erasmus, A. Fitzsimmons, A. Lawrence,
J. Robinson, R. Siverd, J. Tonry, H. Weiland. 0.5-m Reflector + CCD.
V16 Dark Sky New Mexico, Animas. Observer D. Crowson. 0.30-m f/8.0 Ritchey-
Chretien + CCD.
W42 Mind's Eye Observatory, Vero Beach. Observer J. T. Grage. 1.04-m f/3.3
SCT + CMO.
W62 Comet Hunter Observatory2, New Ringgold. Observer J. Maikner. 0.30-m
f/3.8 Riccardi-Honders + CCD.
W68 ATLAS Chile, Rio Hurtado. Observers L. Denneau, R. Siverd, J. Tonry, H.
Weiland. Measurers L. Denneau, N. Erasmus, A. Fitzsimmons, A. Lawrence,
J. Robinson, R. Siverd, J. Tonry, H. Weiland. 0.5-m Reflector + CCD.
W88 Slooh.com Chile Observatory, La Dehesa. Observer A. J. Evans. 0.43-m
f/6.8 Corrected Dall-Kirkham + CCD.
X07 iTelescope Deep Sky Chile, Rio Hurtado. Observer H. Sato. 0.51-m f/6.8
astrograph + CCD.
Y89 Proxima Centauri Observatory, Valdin. Observer R. Hahn. 0.36-m f/2.0
reflector + CMO.
Z80 Northolt Branch Observatory. Observer G. Wells. Measurers G. Wells, J.
Wells. 0.25-m f/8.0 Ritchey-Chretien + CCD.
Orbital elements:
P/2011 NO1 (Elenin)
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5
T 2024 May 7.53848 TT Rudenko
q 1.2438372 (2000.0) P Q
n 0.07392366 Peri. 263.52600 -0.91137153 +0.33514354
a 5.6227279 Node 295.83402 -0.18498254 -0.85207989
e 0.7787840 Incl. 15.39335 -0.36767294 -0.40204312
P 13.3
>From 67 observations 2011 June 12-Aug. 16, mean residual 1".1.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2023 12 29 08 49 14.5 +18 22 26 1.1702 2.0653 146.9 15.1 18.5
...
2024 01 13 08 39 47.1 +16 02 19 0.9678 1.9315 163.6 8.2 17.8
...
2024 01 21 08 31 14.5 +14 33 09 0.8813 1.8611 172.3 4.1 17.4
...
2024 01 27 08 23 31.7 +13 18 24 0.8269 1.8090 174.0 3.3 17.2
2024 01 28 08 22 09.4 +13 05 17 0.8187 1.8004 173.3 3.6 17.1
2024 01 29 08 20 45.9 +12 51 58 0.8107 1.7918 172.5 4.1 17.1
...
2024 02 04 08 12 06.6 +11 28 21 0.7683 1.7406 165.7 8.0 16.8
...
2024 02 12 08 00 24.3 +09 28 16 0.7253 1.6740 155.4 14.2 16.5
...
2024 02 27 07 42 10.4 +05 28 07 0.6797 1.5554 136.5 26.0 16.1
M. P. C. Staff (C) Copyright 2024 MPC M.P.E.C. 2024-B143
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