[Iaude] MPEC O57: COMET P/2012 US27 = P/2024 N5 (Siding Spring)
mpec at cfa.harvard.edu
mpec at cfa.harvard.edu
Fri Jul 26 02:38:45 EDT 2024
M.P.E.C. 2024-O57 Issued 2024 July 26, 06:36 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
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Prepared using the Tamkin Foundation Computer Network
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URL https://www.minorplanetcenter.net/ ISSN 1523-6714
COMET P/2012 US27 = P/2024 N5 (Siding Spring)
M. Masek reports the recovery of comet P/2012 US27 (Siding Spring) on
images taken on July 5 and 6 UT from Pierre Auger Observatory (I47).
Independent recovery reports came from A. Hale on July 12 from Cerro Tololo-LCO
Aqawan A #1 (W89), and J. Drummond on July 16 from Possum Observatory (E94).
Observations:
PK24N050*KC2024 07 05.35240 02 54 48.76 -11 16 30.1 19.1 VqEO057I47
PK24N050 KC2024 07 05.35959 02 54 49.50 -11 16 24.8 19.3 VqEO057I47
PK24N050 KC2024 07 05.38126 02 54 51.67 -11 16 08.0 19.2 VqEO057I47
PK24N050 KC2024 07 05.40239 02 54 53.78 -11 15 51.2 19.2 VqEO057I47
PK24N050 KC2024 07 05.40960 02 54 54.52 -11 15 45.5 19.2 VqEO057I47
PK24N050 KC2024 07 06.37942 02 56 32.90 -11 03 15.9 19.6 VqEO057I47
PK24N050 KC2024 07 06.41497 02 56 36.45 -11 02 48.3 19.5 VqEO057I47
PK24N050 KC2024 07 11.39605 03 04 56.93 -09 58 33.4 19.2 VqEO057I47
PK24N050 KC2024 07 11.41760 03 04 59.07 -09 58 16.9 19.2 VqEO057I47
PK24N050 C2024 07 12.35610 03 06 32.66 -09 46 08.3 19.3 GVEO057W89
PK24N050 C2024 07 12.35961 03 06 33.03 -09 46 05.4 19.3 GVEO057W89
PK24N050 C2024 07 12.36313 03 06 33.34 -09 46 02.9 19.1 GVEO057W89
PK24N050 C2024 07 12.38590003 06 35.544-09 45 46.30 19.09oVEO057W68
PK24N050 C2024 07 12.40570003 06 37.471-09 45 29.84 19.03oVEO057W68
PK24N050 C2024 07 12.41152503 06 38.131-09 45 25.38 19.26oVEO057W68
PK24N050 C2024 07 12.41838903 06 38.762-09 45 20.45 19.27oVEO057W68
PK24N050 7C2024 07 13.15802103 07 52.292-09 35 50.11 20.0 GVEO057Z84
PK24N050 7C2024 07 13.16284103 07 52.759-09 35 46.92 19.4 GVEO057Z84
PK24N050 0B2024 07 13.18240703 07 54.624-09 35 27.72 19.5 VZEO057M49
PK24N050 0B2024 07 13.18667003 07 55.068-09 35 24.99 19.7 VZEO057M49
PK24N050 0B2024 07 13.19093303 07 55.486-09 35 21.51 19.5 VZEO057M49
PK24N050 C2024 07 13.34553603 08 10.89 -09 33 20.4 WEO057X09
PK24N050 C2024 07 13.34906303 08 11.23 -09 33 17.7 WEO057X09
PK24N050 C2024 07 13.35432203 08 11.77 -09 33 13.7 WEO057X09
PK24N050 KC2024 07 13.36764 03 08 12.96 -09 33 04.4 19.3 VqEO057I47
PK24N050 KC2024 07 13.40731 03 08 16.88 -09 32 33.1 19.2 VqEO057I47
PK24N050 C2024 07 15.35992003 11 29.74 -09 07 15.4 WEO057X09
PK24N050 C2024 07 15.36692103 11 30.49 -09 07 10.3 WEO057X09
PK24N050 KC2024 07 16.65356 03 13 36.88 -08 50 27.9 19.3 VqEO057E94
PK24N050 KC2024 07 16.66703 03 13 38.19 -08 50 17.2 19.5 VqEO057E94
PK24N050 KC2024 07 16.68049 03 13 39.50 -08 50 07.1 19.4 VqEO057E94
PK24N050 C2024 07 18.34573 03 16 22.18 -08 28 28.1 18.9 GVEO057W89
PK24N050 C2024 07 18.34924 03 16 22.56 -08 28 25.7 18.7 GVEO057W89
PK24N050 C2024 07 18.35751 03 16 23.35 -08 28 19.3 19.5 GVEO057W89
PK24N050 C2024 07 18.36102 03 16 23.72 -08 28 16.6 19.0 GVEO057W89
PK24N050 C2024 07 18.36453 03 16 24.06 -08 28 13.9 19.1 GVEO057W89
PK24N050 0C2024 07 25.40477 03 27 40.54 -06 55 56.4 VEO057X07
PK24N050 0C2024 07 25.41005 03 27 41.03 -06 55 52.4 18.5 GVEO057X07
Observer details:
E94 Possum Observatory, Gisborne. Observer J. Drummond. 0.41-m f/4.5
reflector + CCD.
I47 Pierre Auger Observatory, Malargue. Observer M. Masek. 0.3-m f/6.8
reflector + CCD.
M49 IAS Remote Observatory, Hakos. Observers D. Husar, M. Junius, L. Demetz,
P. Ditz, R. Hellot, T. Steinbach. Measurer D. Husar. 0.25-m f/4.5
reflector + CMO.
W68 ATLAS Chile, Rio Hurtado. Observers L. Denneau, R. Siverd, J. Tonry, H.
Weiland. Measurers L. Denneau, N. Erasmus, A. Fitzsimmons, J. Robinson,
R. Siverd, J. Tonry, H. Weiland. 0.5-m Reflector + CCD.
W89 Cerro Tololo-LCO Aqawan A #1. Observer A. Hale. 0.35-m f/3 Cassegrain +
CCD.
X07 iTelescope Deep Sky Chile, Rio Hurtado. Observer H. Sato. 0.51-m f/6.8
astrograph + CCD.
X09 Deep Random Survey, Rio Hurtado. Observers A. Schnabel, D. Ruhela.
Measurer S. Deen. 0.43-m reflector + CMOS.
Z84 Calar Alto-Schmidt. Observers F. Ocana, R. Kresken, M. Micheli, L.
Conversi. Measurers F. Ocana, M. Micheli. 0.8-m f/3 Schmidt + CCD.
Orbital elements:
P/2012 US27 (Siding Spring)
Epoch 2024 Oct. 17.0 TT = JDT 2460600.5
T 2024 Oct. 20.65071 TT Rudenko
q 1.8149885 (2000.0) P Q
n 0.08395530 Peri. 0.86459 +0.64436606 -0.59509545
a 5.1654000 Node 49.21122 +0.69775197 +0.20052106
e 0.6486258 Incl. 39.37016 +0.31294500 +0.77823692
P 11.7
>From 337 observations 2012 Oct. 17-2024 July 25, mean residual 1".1.
P/2012 US27 (Siding Spring)
Epoch 2013 Jan. 28.0 TT = JDT 2456320.5
T 2013 Feb. 8.55503 TT Rudenko
q 1.8208395 (2000.0) P Q
n 0.08356095 Peri. 1.26870 +0.64019852 -0.60023493
a 5.1816387 Node 49.20674 +0.69912354 +0.19656600
e 0.6485977 Incl. 39.29280 +0.31838991 +0.77529339
P 11.8
>From 337 observations 2012 Oct. 17-2024 July 25, mean residual 1".1.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2024 06 26 02 38 47.8 -13 17 11 2.3768 2.1594 65.3 25.3 18.7
...
2024 07 11 03 04 17.4 -10 03 41 2.1849 2.0845 70.8 27.4 18.4
...
2024 07 19 03 17 25.7 -08 19 59 2.0814 2.0473 73.9 28.5 18.2
...
2024 07 25 03 27 02.0 -07 01 19 2.0034 2.0207 76.3 29.2 18.1
2024 07 26 03 28 36.8 -06 48 06 1.9904 2.0163 76.7 29.4 18.0
2024 07 27 03 30 11.0 -06 34 51 1.9773 2.0121 77.2 29.5 18.0
...
2024 08 02 03 39 27.5 -05 14 28 1.8989 1.9872 79.7 30.2 17.9
...
2024 08 10 03 51 21.0 -03 24 08 1.7942 1.9561 83.4 31.0 17.7
...
2024 08 25 04 11 50.4 +00 18 57 1.5988 1.9051 90.9 32.0 17.3
M. P. C. Staff (C) Copyright 2024 MPC M.P.E.C. 2024-O57
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