MPEC 2018-C50 : 2018 BK7
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M.P.E.C. 2018-C50 Issued 2018 Feb. 10, 18:22 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
2018 BK7
Observations:
K18B07K C2018 01 09.50348 09 11 11.883+36 48 14.05 22.6 iUEC050F51
K18B07K C2018 01 09.52491 09 11 12.274+36 48 34.35 22.6 iUEC050F51
K18B07K C2018 01 09.53566 09 11 12.438+36 48 44.16 22.1 iUEC050F51
K18B07K* C2018 01 20.45566 09 14 14.833+40 02 48.92 21.9 wUEC050F51
K18B07K C2018 01 20.46692 09 14 14.686+40 03 02.74 21.9 wUEC050F51
K18B07K C2018 01 20.47812 09 14 14.536+40 03 16.21 22.1 wUEC050F51
K18B07K C2018 01 23.41285 09 14 15.999+41 04 00.73 21.2 wUEC050F51
K18B07K C2018 01 23.43611 09 14 15.510+41 04 31.40 21.6 wUEC050F51
K18B07K C2018 02 03.40914 09 11 11.891+45 30 11.83 21.1 iUEC050F51
K18B07K C2018 02 03.42227 09 11 11.127+45 30 34.13 20.6 iUEC050F51
K18B07K C2018 02 03.44872 09 11 09.551+45 31 18.29 21.4 iUEC050F51
K18B07K C2018 02 07.23929 09 08 52.80 +47 21 54.2 20.9 GUEC050G96
K18B07K C2018 02 07.24453 09 08 52.31 +47 22 05.9 21.1 GUEC050G96
K18B07K C2018 02 07.24978 09 08 51.99 +47 22 15.6 21.2 GUEC050G96
K18B07K C2018 02 07.25502 09 08 51.64 +47 22 25.0 21.0 GUEC050G96
K18B07K C2018 02 07.29053 09 08 49.10 +47 23 33.1 21.4 GUEC050V06
K18B07K C2018 02 07.29207 09 08 48.99 +47 23 36.7 21.9 GUEC050V06
K18B07K C2018 02 07.29362 09 08 48.87 +47 23 39.0 21.2 GUEC050V06
K18B07K C2018 02 07.29517 09 08 48.75 +47 23 41.7 21.7 GUEC050V06
K18B07K C2018 02 07.33540 09 08 45.67 +47 24 56.6 20.5 GUEC050I52
K18B07K C2018 02 07.34037 09 08 45.24 +47 25 05.2 21.2 GUEC050I52
K18B07K C2018 02 07.34286 09 08 45.19 +47 25 10.8 20.5 GUEC050I52
K18B07K C2018 02 07.47220 09 08 36.66 +47 28 55.8 19.7 GUEC050I52
K18B07K KC2018 02 07.47446 09 08 36.47 +47 28 59.8 20.4 RoEC050291
K18B07K C2018 02 07.47469 09 08 36.45 +47 28 59.8 20.5 GUEC050I52
K18B07K C2018 02 07.47718 09 08 36.36 +47 29 03.2 20.5 GUEC050I52
K18B07K C2018 02 07.47966 09 08 36.13 +47 29 08.0 20.7 GUEC050I52
K18B07K KC2018 02 07.48168 09 08 36.05 +47 29 12.3 20.7 RoEC050291
K18B07K KC2018 02 07.48890 09 08 35.65 +47 29 24.0 20.3 RoEC050291
K18B07K C2018 02 08.17397 09 08 13.10 +47 51 13.3 20.4 GUEC050I52
K18B07K C2018 02 08.17473 09 08 13.05 +47 51 14.7 20.5 GUEC050I52
K18B07K C2018 02 08.17708 09 08 12.91 +47 51 19.8 20.3 GUEC050I52
K18B07K C2018 02 08.17784 09 08 12.83 +47 51 21.3 20.5 GUEC050I52
K18B07K KC2018 02 08.22500 09 08 09.07 +47 53 02.3 oEC050711
K18B07K KC2018 02 08.22844 09 08 08.82 +47 53 09.6 oEC050711
K18B07K KC2018 02 08.23183 09 08 08.61 +47 53 16.3 oEC050711
K18B07K C2018 02 09.17988 09 07 25.24 +48 24 02.2 20.4 GUEC050I52
K18B07K C2018 02 09.18112 09 07 25.11 +48 24 04.7 20.7 GUEC050I52
K18B07K KC2018 02 09.27538 09 07 17.14 +48 27 25.7 oEC050711
K18B07K KC2018 02 09.27888 09 07 16.85 +48 27 32.8 oEC050711
K18B07K KC2018 02 09.28238 09 07 16.56 +48 27 39.7 oEC050711
K18B07K C2018 02 10.19986 09 06 32.49 +48 58 38.3 20.0 GUEC050I52
K18B07K C2018 02 10.20111 09 06 32.46 +48 58 41.1 19.8 GUEC050I52
K18B07K C2018 02 10.20187 09 06 32.35 +48 58 42.6 20.5 GUEC050I52
K18B07K C2018 02 10.20542 09 06 32.04 +48 58 50.6 20.3 GUEC050I52
Observer details:
291 LPL/Spacewatch II. Observer J. V. Scotti. 1.8-m f/2.7 reflector + CCD.
711 McDonald Observatory. Observer J. G. Ries. 2.1-m reflector + CCD + focal
reducer.
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.
G96 Mt. Lemmon Survey. Observer A. D. Grauer. 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.
1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers G. J. Leonard,
R. A. Kowalski, J. A. Johnson. 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.
V06 Catalina Sky Survey-Kuiper. Observer R. A. Kowalski. 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:
2018 BK7 Earth MOID = 0.0256 AU
Epoch 2018 Mar. 23.0 TT = JDT 2458200.5 MPC
M 355.06304 (2000.0) P Q
n 0.46015344 Peri. 198.42728 -0.94475521 +0.32777452
a 1.6616298 Node 0.70986 -0.28716402 -0.82591742
e 0.4371863 Incl. 5.58526 -0.15803295 -0.45872025
P 2.14 H 23.5 G 0.15 U 5
Residuals in seconds of arc
180109 F51 0.2- 0.2- 180207 V06 0.3+ 0.2- 180208 I52 0.1+ 0.1-
180109 F51 0.2+ 0.1+ 180207 V06 0.4+ 0.5+ 180208 I52 0.3+ 0.1+
180109 F51 0.0 0.0 180207 V06 0.3+ 0.2- 180208 I52 0.0 0.0
180120 F51 0.0 0.1+ 180207 V06 0.2+ 0.4- 180208 711 0.5+ 0.2+
180120 F51 0.0 0.1+ 180207 I52 1.4- 0.1- 180208 711 0.6+ 0.6+
180120 F51 0.0 0.0 180207 I52 2.1- 0.5- 180208 711 1.1+ 0.5+
180123 F51 0.1- 0.1+ 180207 I52 0.8- 0.5+ 180209 I52 0.0 0.0
180123 F51 0.0 0.2- 180207 I52 0.6+ 0.2+ 180209 I52 0.4- 0.1-
180203 F51 0.1+ 0.0 180207 291 0.1- 0.4- 180209 711 0.1- 0.4+
180203 F51 0.1+ 0.0 180207 I52 0.1- 0.1+ 180209 711 0.1- 0.4+
180203 F51 0.1- 0.0 180207 I52 0.5+ 0.7- 180209 711 0.1- 0.3+
180207 G96 0.7+ 0.7- 180207 I52 0.4- 0.1- 180210 I52 0.2- 0.1-
180207 G96 0.5- 0.8+ 180207 291 0.1- 0.0 180210 I52 0.5+ 0.1-
180207 G96 0.0 0.3+ 180207 291 0.0 0.3- 180210 I52 0.0 0.3-
180207 G96 0.2+ 0.4- 180208 I52 0.1+ 0.1+ 180210 I52 0.2- 0.1-
Ephemeris:
2018 BK7 a,e,i = 1.66, 0.44, 6 q = 0.9352
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2018 01 11 09 11 53.0 +37 11 48 0.3329 1.2888 152.9 20.3 22.7
...
2018 01 26 09 13 58.1 +42 00 36 0.2260 1.1935 155.2 20.2 21.7
...
2018 02 03 09 11 23.3 +45 18 37 0.1778 1.1448 151.3 24.4 21.2
...
2018 02 09 09 07 30.5 +48 17 57 0.1447 1.1098 146.2 29.6 20.8
2018 02 10 09 06 39.9 +48 51 34 0.1395 1.1042 145.2 30.6 20.8
2018 02 11 09 05 45.5 +49 26 31 0.1342 1.0986 144.2 31.7 20.7
...
2018 02 17 08 58 34.9 +53 35 45 0.1039 1.0662 136.8 39.4 20.3
...
2018 02 25 08 37 47.8 +62 54 17 0.06593 1.0268 122.6 54.3 19.6
...
2018 03 12 21 49 52.3 +19 57 51 0.02961 0.9690 33.5 145.5 23.4
A. U. Tomatic (C) Copyright 2018 MPC M.P.E.C. 2018-C50
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