2017 BM31

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4933082146 ± 1.55e-08
Semi-major axis (a)1.7826693545 AU ± 4.50e-08
Inclination (i)6.61019468° ± 2.72e-06
Long. of Asc. Node (Ω)132.60606018° ± 1.18e-05
Arg. of Perihelion (ω)96.12247670° ± 1.26e-05
Mean Anomaly (M)204.16251545° ± 4.24e-05
Mean Motion (n)0.4141008082°/day ± 1.57e-08
Perihelion dist (q)0.90326392 AU ± 3.58e-08
Aphelion dist (Q)2.66207479 AU ± 7.26e-08
Orbital Period2.38016025 yr ± 9.01e-08
Physical Parameters
H (abs. magnitude)20.76
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.240″
Uncertainty0
Orbit TypeApollo
MOID0.064524 AU
Observations Used346
Radar Obs Used3
Oppositions1
Arc Total2015-2022
First Observation Used2015-10-08
Last Observation Used2022-09-27
Observations (360)
Date Type RA Dec Mag Band Observatory
2017-07-17 06:21:46 C 18 39 30.19 +00 00 07.8 U H21
2017-07-17 06:24:13 C 18 39 30.72 -00 00 04.6 U H21
2017-07-17 06:26:40 C 18 39 31.30 -00 00 17.9 U H21
2017-07-17 06:29:08 C 18 39 31.85 -00 00 31.0 U H21
2017-07-17 06:31:30 C 18 39 32.38 -00 00 43.3 U H21
2017-07-17 09:22:25 C 18 40 12.21 -00 15 30.7 U 654
2017-07-17 09:41:38 C 18 40 16.48 -00 17 10.4 U 654
2017-07-17 20:40:45 C 18 42 53.04 -01 13 08.4 L04
2017-07-17 20:46:26 C 18 42 54.25 -01 13 36.7 L04
2017-07-17 20:53:15 C 18 42 55.70 -01 14 10.7 L04
2017-07-17 21:50:45 C 18 43 08.63 -01 18 52.5 q 160
2017-07-17 21:52:43 C 18 43 09.05 -01 19 02.2 q 160
2017-07-17 21:54:41 C 18 43 09.49 -01 19 12.1 q 160
2017-07-17 22:12:14 C 18 43 13.46 -01 20 45.3 q C23
2017-07-17 22:17:37 C 18 43 14.60 -01 21 11.9 q C23
2017-07-17 22:24:05 C 18 43 15.96 -01 21 43.6 q C23
2017-07-18 04:34:30 C 18 44 38.97 -01 51 33.3 q H45
2017-07-18 04:35:55 C 18 44 39.28 -01 51 40.3 q H45
2017-07-18 04:37:03 C 18 44 39.49 -01 51 45.6 q H45
2017-07-18 04:38:15 C 18 44 39.71 -01 51 51.1 q H45
2017-07-18 04:39:24 C 18 44 39.97 -01 51 56.8 q H45
2017-07-18 04:40:37 C 18 44 40.21 -01 52 02.5 q H45
2017-07-18 04:41:42 C 18 44 40.43 -01 52 07.9 q H45
2017-07-18 04:42:53 C 18 44 40.66 -01 52 13.6 q H45
2017-07-18 07:02:22 C 18 45 08.57 -02 03 25.8 U H21
2017-07-18 07:04:27 C 18 45 08.99 -02 03 35.6 U H21
2017-07-18 07:06:30 C 18 45 09.40 -02 03 45.5 U H21
2017-07-18 07:08:34 C 18 45 09.84 -02 03 55.0 U H21
2017-07-18 07:10:38 C 18 45 10.26 -02 04 05.0 U H21
2017-07-18 07:12:43 C 18 45 10.69 -02 04 14.8 U H21
2017-07-18 22:03:41 C 18 48 22.07 -03 13 01.9 q 160
2017-07-18 22:05:44 C 18 48 22.47 -03 13 11.1 q 160
2017-07-18 22:07:46 C 18 48 22.85 -03 13 20.3 q 160
2017-07-19 21:09:59 C 18 52 56.96 -04 52 17.6 q 160
2017-07-19 21:11:20 C 18 52 57.22 -04 52 23.2 q 160
2017-07-20 06:02:26 C 18 54 34.53 -05 27 58.9 q H45
2017-07-20 06:04:20 C 18 54 34.84 -05 28 06.5 q H45
2017-07-20 06:05:30 C 18 54 35.06 -05 28 11.0 q H45
2017-07-20 06:06:24 C 18 54 35.22 -05 28 14.9 q H45
2017-07-20 06:07:41 C 18 54 35.40 -05 28 19.6 q H45
2017-07-20 06:08:59 C 18 54 35.62 -05 28 24.7 q H45
2017-07-20 06:10:04 C 18 54 35.79 -05 28 28.9 q H45
2017-07-20 06:11:08 C 18 54 35.99 -05 28 33.6 q H45
2017-07-23 06:34:29 C 19 06 23.72 -09 39 27.1 q H45
2017-07-23 06:37:52 C 19 06 24.16 -09 39 37.5 q H45
2017-07-23 06:39:25 C 19 06 24.40 -09 39 41.8 q H45
2017-07-23 06:42:40 C 19 06 24.79 -09 39 51.7 q H45
2017-07-23 06:44:06 C 19 06 24.94 -09 39 55.9 q H45
2017-07-23 06:47:22 C 19 06 25.39 -09 40 05.5 q H45
2017-07-25 05:22:55 C 19 12 43.96 -11 49 27.2 U H21
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2017-07-07 02:12:00 -24997.6971 0.1 Hz 2380 -1 -1
2017-07-07 02:45:00 72266210.5 4 us 2380 -1 -1
2017-07-08 02:30:00 73502265.06 0.5 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)