MPEC 2017-U234: A/2017 U1
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M.P.E.C. 2017-U234 Issued 2017 Oct. 27, 20:23 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
A/2017 U1
Observations:
AK17U010 C2017 10 26.24599 00 04 30.08 +04 50 34.8 21.8 GUEU234V06
AK17U010 C2017 10 26.24854 00 04 29.03 +04 50 35.2 22.7 GUEU234V06
AK17U010 C2017 10 26.25110 00 04 28.12 +04 50 36.9 22.8 GUEU234V06
AK17U010 C2017 10 26.25365 00 04 27.01 +04 50 38.0 22.1 GUEU234V06
AK17U010 C2017 10 26.28697 00 04 13.60 +04 50 55.6 20.0 RoEU234291
AK17U010 C2017 10 26.29059 00 04 12.14 +04 50 57.2 oEU234291
AK17U010 C2017 10 26.29419 00 04 10.69 +04 50 59.0 oEU234291
AK17U010 KC2017 10 26.29574 00 04 10.00 +04 50 59.1 22.1 RqEU234926
AK17U010 KC2017 10 26.29945 00 04 08.54 +04 51 01.2 21.9 RqEU234926
AK17U010 KC2017 10 26.30038 00 04 08.20 +04 51 02.2 22.3 RqEU234926
AK17U010 C2017 10 26.30912 00 04 04.68 +04 51 06.5 20.7 RoEU234926
AK17U010 KC2017 10 26.30968 00 04 04.47 +04 51 06.6 22.2 RqEU234926
AK17U010 C2017 10 26.31285 00 04 03.23 +04 51 08.5 21.4 RoEU234926
AK17U010 C2017 10 26.31656 00 04 01.73 +04 51 10.3 21.7 RoEU234926
AK17U010 KC2017 10 26.89290100 00 25.32 +04 56 10.6 22.8 GUEU234K93
AK17U010 KC2017 10 26.89578100 00 24.28 +04 56 12.4 22.2 GUEU234K93
AK17U010 KC2017 10 26.89674200 00 23.93 +04 56 13.0 21.7 GUEU234K93
AK17U010 KC2017 10 26.89962500 00 22.85 +04 56 13.8 22.2 GUEU234K93
Observer details:
291 LPL/Spacewatch II. Observer M. T. Read. 1.8-m f/2.7 reflector + CCD.
926 Tenagra II Observatory. Observers M. Schwartz, P. R. Holvorcem, G. Masi.
Measurers M. Schwartz, G. Masi, P. Holvorcem. 0.41-m f/3.75 reflector
+ CCD, 0.81-m f/7 Ritchey-Chretien + CCD.
K93 Sutherland-LCO C. Observers T. Lister, S. Greenstreet, E. Gomez,
J. Chatelain. Measurer T. Lister. 1.0-m f/8 Ritchey-Chretien + CCD
V06 Catalina Sky Survey-Kuiper. Observer 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. 1.55-m reflector + CCD.
Orbital elements:
A/2017 U1
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5
T 2017 Sept. 9.47814 TT MPCW
q 0.2547027 (2000.0) P Q
z -0.7767873 Peri. 241.58783 -0.63004477 +0.69290131
+/-0.0067902 Node 24.60195 +0.50851231 +0.70935843
e 1.1978499 Incl. 122.62737 -0.58690615 -0.12922228
From 68 observations 2017 Oct. 14-26, mean residual 0".5.
Residuals in seconds of arc
K17AE 703 0.3+ 1.3+ K17AM H06 0.2+ 0.3+ K17AP 104 0.6+ 0.2-
K17AH 703 0.4+ 0.6- K17AM H06 0.1- 0.2+ K17AP 104 0.4+ 0.1+
K17AI F51 0.0 0.0 K17AM H06 0.1+ 0.1+ K17AQ V06 0.5- 0.4+
K17AI F51 0.2+ 0.3- K17AM Q62 0.4+ 1.4+ K17AQ V06 0.7- 0.5-
K17AJ F51 0.0 0.2- K17AM Q62 1.5+ 0.9+ K17AQ V06 1.2+ 0.2-
K17AJ F51 0.4+ 0.2- K17AM Q62 1.2+ 0.8+ K17AQ V06 0.0 0.4-
K17AJ F51 0.6- 0.1- K17AN 734 0.1- 0.2- K17AQ 291 0.1+ 0.2+
K17AJ F51 0.3- 0.1- K17AN 734 0.1- 0.6- K17AQ 291 0.0 0.0
K17AJ 104 1.3+ 0.6- K17AN 734 0.1- 1.1- K17AQ 291 0.1- 0.1-
K17AJ 104 0.4+ 0.1- K17AO G96 0.6- 0.1- K17AQ 926 0.9- 0.9-
K17AJ 104 0.4+ 0.1+ K17AO G96 0.4+ 0.1+ K17AQ 926 0.5- 0.7-
K17AJ J04 0.6+ 0.2- K17AO G96 0.6+ 0.4- K17AQ 926 0.0 0.1-
K17AJ J04 0.5+ 0.1- K17AO G96 0.0 0.1- K17AQ 926 0.3- 0.2-
K17AK I52 0.8+ 0.5- K17AP 926 0.2+ 0.4- K17AQ 926 0.1- 0.4-
K17AK I52 0.5+ 0.5- K17AP 926 0.7+ 0.4+ K17AQ 926 0.3+ 0.1-
K17AK I52 0.4+ 0.7- K17AP 926 0.4+ 0.6- K17AQ 926 0.0 0.2-
K17AK I52 0.3+ 0.8- K17AP V03 0.6+ 1.0+ K17AQ 204 0.7+ 0.0
K17AL 291 0.2+ 0.0 K17AP G96 0.5+ 0.1+ K17AQ 204 0.0 0.1+
K17AL 291 0.1+ 0.0 K17AP G96 0.5- 0.4+ K17AQ 204 0.3- 0.4-
K17AL 291 0.1- 0.2+ K17AP V03 0.4- 0.3- K17AQ K93 0.1+ 0.0
K17AL 926 0.1- 0.1+ K17AP G96 1.1- 1.5+ K17AQ K93 0.3+ 0.5+
K17AL 926 0.1+ 0.4+ K17AP G96 (2.7- 2.7+) K17AQ K93 0.3+ 0.6+
K17AL 926 0.2+ 0.1- K17AP 104 1.0+ 0.1- K17AQ K93 0.1- 0.1+
Ephemeris:
A/2017 U1
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2017 09 27 09 40 59.4 -06 15 56 0.6291 0.6427 38.5 104.0 20.4
...
2017 10 12 06 36 04.3 -04 49 54 0.1875 1.0391 97.4 72.3 18.4
...
2017 10 20 01 21 05.6 +03 06 02 0.2449 1.2386 171.7 6.7 19.2
...
2017 10 26 00 06 10.5 +04 48 35 0.4287 1.3837 150.6 20.7 20.6
2017 10 27 23 59 47.7 +04 56 48 0.4621 1.4075 148.1 21.9 20.8
2017 10 28 23 54 19.5 +05 03 56 0.4959 1.4313 145.8 22.9 20.9
...
2017 11 03 23 33 34.3 +05 33 53 0.7048 1.5720 135.1 26.4 21.8
...
2017 11 11 23 21 45.7 +06 01 03 0.9931 1.7555 124.5 27.7 22.7
...
2017 11 26 23 16 52.7 +06 48 04 1.5500 2.0885 108.8 26.6 23.9
Gareth V. Williams (C) Copyright 2017 MPC M.P.E.C. 2017-U234
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