MPEC 2017-X109: 2017 XA2
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M.P.E.C. 2017-X109 Issued 2017 Dec. 14, 15:15 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
2017 XA2
Observations:
K17X02A* C2017 12 08.41357 05 11 59.556+01 00 52.42 21.0 iUEX109F51
K17X02A C2017 12 08.42433 05 11 57.850+01 01 06.60 21.0 iUEX109F51
K17X02A C2017 12 08.43512 05 11 56.094+01 01 20.88 20.7 iUEX109F51
K17X02A C2017 12 08.44595 05 11 54.348+01 01 34.99 20.8 iUEX109F51
K17X02A |C2017 12 09.24130 05 09 50.53 +01 19 12.8 20.9 VUEX109807
K17X02A |C2017 12 09.24704 05 09 49.63 +01 19 20.5 21.1 VUEX109807
K17X02A |C2017 12 09.25290 05 09 48.70 +01 19 28.6 21.0 VUEX109807
K17X02A C2017 12 09.27538 05 09 45.57 +01 19 46.2 21.2 GUEX109I52
K17X02A C2017 12 09.27786 05 09 45.15 +01 19 48.9 21.1 GUEX109I52
K17X02A C2017 12 09.28034 05 09 44.78 +01 19 52.8 21.3 GUEX109I52
K17X02A C2017 12 09.28282 05 09 44.37 +01 19 54.9 21.7 GUEX109I52
K17X02A C2017 12 09.37109 05 09 30.36 +01 21 52.7 21.0 RoEX109926
K17X02A C2017 12 09.39245 05 09 26.99 +01 22 20.2 21.8 RoEX109926
K17X02A _C2017 12 09.39295705 09 27.438+01 22 23.79 20.6 GUEX109568
K17X02A _C2017 12 09.39390405 09 27.288+01 22 25.03 20.6 GUEX109568
K17X02A _C2017 12 09.39484605 09 27.138+01 22 26.28 20.6 GUEX109568
K17X02A C2017 12 09.45989805 09 16.37 +01 23 49.7 20.3 GUEX109H01
K17X02A C2017 12 09.46397805 09 15.72 +01 23 55.0 20.8 GUEX109H01
K17X02A C2017 12 09.47331705 09 14.26 +01 24 07.3 20.8 GUEX109H01
K17X02A C2017 12 09.48032505 09 13.17 +01 24 16.6 20.8 GUEX109H01
K17X02A |C2017 12 10.22622 05 07 18.89 +01 40 57.4 21.1 VuEX109807
K17X02A |C2017 12 10.23094 05 07 18.17 +01 41 03.6 21.2 VuEX109807
K17X02A |C2017 12 10.23530 05 07 17.51 +01 41 10.0 21.2 VuEX109807
K17X02A KC2017 12 11.23378705 04 45.81 +02 03 06.7 21.2 VuEX109H21
K17X02A KC2017 12 11.24069505 04 44.74 +02 03 15.9 21.6 VuEX109H21
K17X02A KC2017 12 11.25126005 04 43.10 +02 03 30.3 21.7 VuEX109H21
K17X02A C2017 12 12.35398 05 01 57.60 +02 28 07.0 21.0 RoEX109926
K17X02A C2017 12 12.36213 05 01 56.43 +02 28 17.7 21.9 RoEX109926
K17X02A C2017 12 12.37035 05 01 55.09 +02 28 28.0 21.3 RoEX109926
K17X02A C2017 12 13.27145 04 59 42.50 +02 48 37.0 21.2 RoEX109926
K17X02A C2017 12 13.27632 04 59 41.86 +02 48 44.3 21.2 RoEX109926
K17X02A C2017 12 13.28120 04 59 41.07 +02 48 50.1 21.2 RoEX109926
K17X02A KC2017 12 13.39690 04 59 23.72 +02 51 25.5 oEX109691
K17X02A KC2017 12 13.41646 04 59 20.80 +02 51 52.0 oEX109691
K17X02A KC2017 12 13.43600 04 59 17.87 +02 52 17.7 oEX109691
K17X02A C2017 12 14.24221 04 57 21.66 +03 10 20.7 20.6 GUEX109I52
K17X02A C2017 12 14.25418 04 57 19.87 +03 10 37.1 UEX109I52
K17X02A C2017 12 14.28134 04 57 15.82 +03 11 13.7 20.9 RoEX109926
K17X02A C2017 12 14.29061 04 57 14.48 +03 11 25.7 20.9 RoEX109926
K17X02A C2017 12 14.29988 04 57 13.11 +03 11 38.4 20.7 RoEX109926
Observer details:
568 Mauna Kea. Observers R. J. Wainscoat, C. Wipper. Measurers M. Micheli,
R. J. Wainscoat. 3.6-m Canada-France-Hawaii Telescope + CCD.
691 Steward Observatory, Kitt Peak. Observer M. T. Read. 0.9-m f/3 reflector
+ CCD.
807 Cerro Tololo. Observers T. Linder, R. Holmes. 0.61-m f/6.5 astrograph
+ CCD.
926 Tenagra II Observatory. Observers M. Schwartz, P. R. Holvorcem. Measurer
M. Schwartz. 0.81-m f/7 Ritchey-Chretien + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz,
M. Willman. Measurers K. Chambers, S. Chastel, L. Denneau, H. Flewelling,
M. Huber, E. Lilly, E. Magnier, R. Wainscoat, C. Waters, R. Weryk. 1.8-m
Ritchey-Chretien + CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.81-m f/4.0
astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers R. G. Matheny,
E. J. Christensen. Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs,
A. D. Grauer, J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard,
R. G. Matheny, R. L. Seaman, F. C. Shelly. 1.0-m reflector + CCD.
Orbital elements:
2017 XA2 Earth MOID = 0.2666 AU
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5 MPC
M 33.15673 (2000.0) P Q
n 0.59063281 Peri. 199.73267 +0.40041893 +0.80339834
a 1.4068820 Node 96.06477 -0.76991371 +0.55576492
e 0.4855561 Incl. 26.30693 -0.49688787 -0.21372051
P 1.67 H 19.9 G 0.15 U 8
Residuals in seconds of arc
171208 F51 0.1- 0.0 171209 568 0.0 0.1+ 171212 926 0.6- 0.4-
171208 F51 0.3+ 0.0 171209 568 0.0 0.1+ 171213 926 0.7- 0.1-
171208 F51 0.0 0.1+ 171209 H01 0.2+ 0.3+ 171213 926 0.7+ 0.6+
171208 F51 0.1- 0.0 171209 H01 0.0 0.2+ 171213 926 0.1- 0.1-
171209 807 0.1- 0.3- 171209 H01 0.0 0.1+ 171213 691 0.1+ 0.2+
171209 807 0.1+ 0.1- 171209 H01 0.1+ 0.2+ 171213 691 0.1+ 0.4+
171209 807 0.1+ 0.2+ 171210 807 0.3- 0.7- 171213 691 0.2- 0.1-
171209 I52 0.2- 0.3+ 171210 807 0.0 0.8- 171214 I52 0.3+ 0.3-
171209 I52 0.6- 0.2- 171210 807 0.4+ 0.2- 171214 I52 0.0 0.0
171209 I52 0.2- 0.4+ 171211 H21 0.3+ 0.1- 171214 926 0.4- 0.0
171209 I52 0.5- 0.8- 171211 H21 0.3+ 0.2- 171214 926 0.0 0.5-
171209 926 0.3- 0.2+ 171211 H21 0.2+ 0.1+ 171214 926 0.1+ 0.2-
171209 926 0.1- 0.6- 171212 926 0.4- 0.5+
171209 568 0.0 0.1+ 171212 926 0.7+ 0.3+
Ephemeris:
2017 XA2 a,e,i = 1.41, 0.49, 26 q = 0.7238
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2017 11 14 06 13 46.3 -06 09 16 0.7185 1.5521 130.0 29.2 21.4
...
2017 11 29 05 37 04.5 -02 14 15 0.7126 1.6414 149.7 17.7 21.2
...
2017 12 07 05 15 41.7 +00 30 09 0.7332 1.6855 157.3 13.0 21.1
...
2017 12 13 05 00 22.4 +02 42 37 0.7613 1.7171 159.0 11.8 21.2
2017 12 14 04 57 56.5 +03 05 00 0.7670 1.7222 158.9 11.9 21.2
2017 12 15 04 55 33.2 +03 27 24 0.7731 1.7273 158.6 12.0 21.3
...
2017 12 21 04 42 16.2 +05 40 54 0.8157 1.7570 154.9 13.7 21.5
...
2017 12 29 04 27 50.2 +08 31 30 0.8882 1.7945 147.0 17.4 21.8
...
2018 01 13 04 11 35.1 +13 13 07 1.0630 1.8586 130.5 23.7 22.5
A. U. Tomatic (C) Copyright 2017 MPC M.P.E.C. 2017-X109
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