[Iaude] MPEC X91: 2015 XY169 [a=1.41,e=0.29,i=8.5,H=25.5]

mpec at marsden.cfa.harvard.edu mpec at marsden.cfa.harvard.edu
Wed Dec 9 19:35:32 EST 2020


M.P.E.C. 2020-X91                             Issued 2020 December 10, 00:33 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  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

                                   2015 XY169                                   


                           Revision to MPEC 2015-X135                           

Additional Observations:
     K15XG9Y  C2020 11 27.28031 04 20 24.51 -25 21 03.8          20.3 GVEX091G96
     K15XG9Y  C2020 11 27.29107 04 20 27.17 -25 20 19.9          20.1 GVEX091G96
     K15XG9Y  C2020 12 04.36843 05 16 51.95 -09 56 41.1          19.5 GVEX091703
     K15XG9Y  C2020 12 04.37381 05 16 55.25 -09 55 29.4                VEX091703
     K15XG9Y  C2020 12 08.49404306 22 44.81 +11 26 30.1          19.05oVEX091T05
     K15XG9Y  C2020 12 08.52409806 23 17.74 +11 38 18.0          18.27oVEX091T05
     K15XG9Y  C2020 12 08.52993906 23 24.12 +11 40 35.8          18.66oVEX091T05
     K15XG9Y  C2020 12 08.55474606 23 51.44 +11 50 15.1          18.38oVEX091T05
     K15XG9Y  C2020 12 08.59392 06 24 35.13 +12 05 39.0          18.3 oVEX091T08
     K15XG9Y  C2020 12 08.59438 06 24 35.62 +12 05 49.4          18.4 oVEX091T08
     K15XG9Y  C2020 12 08.59484 06 24 36.32 +12 06 01.7          18.4 oVEX091T08
     K15XG9Y  C2020 12 08.59530 06 24 36.72 +12 06 11.5          18.6 oVEX091T08
     K15XG9Y  C2020 12 08.59576 06 24 37.22 +12 06 22.2          18.4 oVEX091T08
     K15XG9Y  C2020 12 08.84492 06 30 06.06 +13 43 11.7          19.1 GVEX091N88
     K15XG9Y  C2020 12 08.84558 06 30 06.87 +13 43 26.8          18.5 GVEX091N88
     K15XG9Y  C2020 12 08.84587 06 30 07.17 +13 43 34.4          18.2 GVEX091N88
     K15XG9Y KC2020 12 09.26424006 39 30.39 +16 32 53.2          18.6 VuEX091H21
     K15XG9Y KC2020 12 09.26621406 39 32.84 +16 33 41.8          18.4 VuEX091H21
     K15XG9Y KC2020 12 09.26825606 39 35.32 +16 34 31.6          18.1 VuEX091H21
     K15XG9Y KC2020 12 09.27029806 39 37.84 +16 35 21.7          19.1 VuEX091H21
     K15XG9Y KC2020 12 09.27234006 39 40.38 +16 36 12.0          19.3 VuEX091H21
     K15XG9Y KC2020 12 09.27438206 39 42.88 +16 37 02.1          18.4 VuEX091H21
     K15XG9Y KC2020 12 09.27823 06 39 50.46 +16 38 38.7          18.0 GVEX091H36
     K15XG9Y KC2020 12 09.28648 06 40 00.63 +16 42 01.8          18.0 GVEX091H36
     K15XG9Y KC2020 12 09.28854 06 40 03.20 +16 42 51.9          18.3 GVEX091H36
     K15XG9Y  C2020 12 09.35111506 41 26.19 +17 09 02.6          18.26GVEX091I52
     K15XG9Y  C2020 12 09.35124506 41 26.35 +17 09 06.1          17.75GVEX091I52
     K15XG9Y  C2020 12 09.35137706 41 26.53 +17 09 09.1          18.18GVEX091I52
     K15XG9Y  C2020 12 09.35150606 41 26.67 +17 09 12.2          17.99GVEX091I52
     K15XG9Y KC2020 12 09.57000 06 46 42.23 +18 37 45.0          19.2 VqEX091900
     K15XG9Y  C2020 12 09.57357 06 46 46.91 +18 39 13.2          19.2 VqEX091900
     K15XG9Y KC2020 12 09.87636 06 54 00.94 +20 41 44.3          18.3 GVEX091595
     K15XG9Y KC2020 12 09.87955 06 54 05.34 +20 43 03.6          18.1 GVEX091595
     K15XG9Y KC2020 12 09.88469 06 54 12.45 +20 45 11.9          18.9 GVEX091595
     K15XG9Y hC2020 12 09.89484406 54 26.55 +20 49 29.6          18.6 GVEX091L01
     K15XG9Y hC2020 12 09.89682906 54 29.31 +20 50 19.4          18.5 GVEX091L01
     K15XG9Y hC2020 12 09.90412506 54 39.29 +20 53 21.1          18.6 GVEX091L01
     K15XG9Y hC2020 12 09.90578806 54 41.60 +20 54 02.9          18.4 GVEX091L01
     K15XG9Y pC2020 12 09.90661706 54 42.74 +20 54 23.5          18.4 GVEX091L01

Observer details:
595 Farra d'Isonzo.  Observers F. Bressan, E. Pettarin.  Measurer E.
    Pettarin.  0.40-m f/5.15 reflector + CCD.
703 Catalina Sky Survey.  Observer D. Rankin.  Measurers D. Rankin, B. Gray,
    F. C. Shelly.  1.5-m reflector + 10K CCD.
900 Moriyama.  Observer Y. Ikari.  0.26-m f/7.0 reflector + CCD.
G96 Mt. Lemmon Survey.  Observer H. Groeller.  Measurers D. Rankin, B. Gray,
    F. C. Shelly.  1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield.  Observer R. Holmes.
    Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes.  0.76-m f/3.0
    astrograph + CCD.
H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.56-m reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station.  Observer D. Rankin.  Measurers
    E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
    H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
    Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos.  1.0-m reflector +
    CCD.
L01 Visnjan Observatory, Tican.  Observer K. Korlevic.  1.0-m f/2.9 reflector
    + CCD.
N88 Xingming Observatory #3, Nanshan.  Observer X. Gao.  Measurer Q.-Z. Ye.
    0.6-m f/8 Ritchey-Chretien + CCD.
T05 ATLAS-HKO, Haleakala.  Observers L. Denneau, J. Tonry, A. Heinze, H.
    Weiland.  Measurers L. Denneau, J. Tonry, A. Heinze, H. Weiland, H.
    Flewelling, A. Fitzsimmons, J. Robinson, N. Erasmus.  0.5-m reflector +
    CCD.
T08 ATLAS-MLO, Mauna Loa.  Observers L. Denneau, A. Heinze, H. Weiland, J.
    Tonry, K. Smith.  Measurers L. Denneau, A. Heinze, B. Stalder, J. Tonry,
    K. Smith.  0.5-m f/2.0 Schmidt + CCD.

First and last observations above in comparison with prediction:
Residuals in seconds of arc (or zero decimals in degrees), reference and Delta-T
201127 G96   29+    1+    201209 L01   69+   19+    MPO438022   +1.66 days

Orbital elements:
2015 XY169                                               Earth MOID = 0.0198 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5                 Veres
M 358.07403              (2000.0)            P               Q
n   0.59179602     Peri.   11.22551     +0.00104182     -0.98941743
a   1.4050378      Node    78.83513     +0.90564910     -0.06058995
e   0.2877092      Incl.    8.50480     +0.42402668     +0.13184083
P   1.67           H   25.5           G   0.15           U   1
Residuals in seconds of arc
151205 F51  0.0   0.1+    201204 703  0.6+  0.6+    201209 H21  0.1+  0.3+
151205 F51  0.5+  0.7+    201204 703  0.1-  0.5-    201209 H36  0.8+  1.0+
151206 F51  0.2-  0.1+    201208 T05  1.2-  2.4-    201209 H36  0.6+  1.5+
151206 F51  0.6-  0.1-    201208 T05  0.4+  0.2+    201209 H36  1.0+  1.0+
151206 F51  0.3-  0.1-    201208 T05  0.1-  1.1+    201209 I52  0.1-  0.2-
151206 F51  0.0   0.1+    201208 T05  1.1-  0.8-    201209 I52  0.1-  0.1+
151207 H36  1.5+  0.6+    201208 T08  0.0   0.1-    201209 I52  0.1+  0.2-
151207 H36  2.4+  7.4-    201208 T08  0.5-  0.5-    201209 I52  0.1-  0.2-
151207 H36  0.2+  0.3-    201208 T08  2.1+  1.1+    201209 900  1.4-  1.0-
151211 J04  0.7-  0.3+    201208 T08  0.3+  0.1+    201209 900  0.9-  1.9-
151211 J04  0.4-  0.1+    201208 T08  0.0   0.1+    201209 595  0.3+  0.5+
151213 926  0.0   0.3+    201208 N88  0.7-  0.4+    201209 595  0.0   0.0
151213 926  0.1-  0.4+    201208 N88  0.2-  0.3-    201209 595  0.1+  0.2-
151213 926  0.0   0.4+    201208 N88  0.8-  0.3+    201209 L01  0.1-  0.0
151216 926  0.6-  0.0     201209 H21  0.2+  0.1+    201209 L01  0.3+  0.2+
151216 926  0.2+  0.0     201209 H21  0.4+  0.3+    201209 L01  0.2-  0.2-
151216 926  0.4+  0.0     201209 H21  0.1-  0.0     201209 L01  0.2+  0.1+
201127 G96  0.6-  0.3+    201209 H21  0.0   0.0     201209 L01  0.2+  0.0
201127 G96  0.0   0.0     201209 H21  0.3+  0.3+

Ephemeris:
2015 XY169               a,e,i = 1.41, 0.29, 9                   q = 1.0008
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase     V
2020 11 10    03 34 41.2 -31 53 43   0.1098  1.0646   130.3    45.2    22.6
...
2020 11 25    04 09 52.5 -27 31 46   0.05851 1.0269   131.7    45.9    21.1
...
2020 12 03    05 01 54.1 -14 27 22   0.03414 1.0132   143.0    35.9    19.7
...
2020 12 09    06 33 31.0 +14 48 13   0.02293 1.0061   157.4    22.1    18.4
2020 12 10    06 56 44.4 +21 35 17   0.02250 1.0052   154.9    24.6    18.4
2020 12 11    07 22 28.8 +28 14 43   0.02262 1.0044   150.4    29.0    18.6
...
2020 12 17    10 14 15.3 +51 12 49   0.03245 1.0012   121.1    57.3    20.1
...
2020 12 25    12 21 14.5 +53 37 33   0.05544 1.0017   107.7    69.3    21.7
...
2021 01 09    13 24 39.6 +51 43 13   0.1013  1.0170   106.6    67.9    23.0

A. U. Tomatic                (C) Copyright 2020 MPC           M.P.E.C. 2020-X91




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