MPEC 2020-X91 : 2015 XY169
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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@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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