IAA RAS IAA Minor Planet Database

2013 HG20

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5757513553 ± 4.80e-07
Semi-major axis (a)2.1682458034 AU ± 2.13e-06
Inclination (i)4.17482697° ± 8.39e-06
Long. of Asc. Node (Ω)203.69070318° ± 4.46e-05
Arg. of Perihelion (ω)89.09706589° ± 4.25e-05
Mean Anomaly (M)308.30412515° ± 2.10e-03
Mean Motion (n)0.3087091517°/day ± 4.54e-07
Perihelion dist (q)0.91987534 AU ± 1.38e-06
Aphelion dist (Q)3.41661626 AU ± 3.51e-06
Orbital Period3.19273425 yr ± 4.70e-06
Physical Parameters
H (abs. magnitude)21.00
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.336″
Uncertainty1
Orbit TypeApollo
MOID0.053542 AU
Observations Used198
Radar Obs Used1
Oppositions1
Arc Total2013-2013
First Observation Used2013-04-30
Last Observation Used2013-10-30
Observations (208)
Date Type RA Dec Mag Band Observatory
2013-09-16 06:27:48 C 00 51 32.19 +19 40 41.1 – r Y00
2013-09-16 06:30:14 C 00 51 32.02 +19 40 34.5 – r Y00
2013-09-22 23:16:56 C 00 45 06.69 +14 15 51.7 – q 160
2013-09-22 23:20:56 C 00 45 06.51 +14 15 45.1 – q 160
2013-09-22 23:24:53 C 00 45 06.32 +14 15 38.3 – q 160
2013-09-23 23:30:21 C 00 44 16.00 +13 36 14.8 – q 160
2013-09-23 23:34:22 C 00 44 15.81 +13 36 08.4 – q 160
2013-09-23 23:38:24 C 00 44 15.62 +13 36 02.1 – q 160
2013-09-24 10:23:23 C 00 43 52.36 +13 19 12.1 – q 703
2013-09-24 10:33:04 C 00 43 51.94 +13 18 55.2 – q 703
2013-09-24 10:42:44 C 00 43 51.55 +13 18 40.1 – q 703
2013-09-24 10:52:22 C 00 43 51.13 +13 18 25.2 – q 703
2013-09-25 00:01:24 C 00 43 26.41 +12 58 08.8 – q 160
2013-09-25 00:04:45 C 00 43 26.23 +12 58 03.9 – q 160
2013-09-25 00:08:43 C 00 43 26.13 +12 57 57.8 – q 160
2013-09-25 08:10:33 C 00 43 09.76 +12 45 58.5 – q H45
2013-09-25 08:12:23 C 00 43 09.65 +12 45 56.3 – q H45
2013-09-25 08:13:55 C 00 43 09.58 +12 45 53.3 – q H45
2013-09-25 08:15:18 C 00 43 09.54 +12 45 52.0 – q H45
2013-09-25 08:18:30 C 00 43 09.37 +12 45 46.7 – q H45
2013-09-25 08:21:52 C 00 43 09.20 +12 45 41.6 – q H45
2013-09-29 12:04:12 C 00 40 10.421 +10 31 33.62 – L F51
2013-09-29 12:18:56 C 00 40 09.893 +10 31 15.56 – L F51
2013-09-30 13:44:18 C 00 39 31.16 +10 01 02.8 – q D29
2013-09-30 14:07:13 C 00 39 30.44 +10 00 36.5 – q D29
2013-10-01 05:06:53 C 00 39 07.41 +09 43 35.7 – q G96
2013-10-01 05:20:35 C 00 39 06.96 +09 43 20.4 – q G96
2013-10-01 05:34:22 C 00 39 06.53 +09 43 05.1 – q G96
2013-10-01 09:33:02 C 00 38 58.72 +09 38 39.6 – q 703
2013-10-01 09:39:53 C 00 38 58.50 +09 38 31.7 – q 703
2013-10-01 09:46:42 C 00 38 58.24 +09 38 23.2 – q 703
2013-10-01 09:53:35 C 00 38 58.04 +09 38 15.8 – q 703
2013-10-01 10:13:43 C 00 38 57.43 +09 37 53.6 – q 703
2013-10-01 10:23:37 C 00 38 57.09 +09 37 43.3 – q 703
2013-10-01 10:33:48 C 00 38 56.82 +09 37 31.0 – q 703
2013-10-01 10:43:54 C 00 38 56.52 +09 37 19.5 – q 703
2013-10-03 03:38:57 C 00 38 00.69 +08 53 53.7 – N I41
2013-10-03 06:43:56 C 00 37 55.38 +08 50 47.7 – N I41
2013-10-03 07:47:27 C 00 37 53.49 +08 49 43.8 – N I41
2013-10-04 12:16:52 C 00 37 15.190 +08 21 53.56 – L F51
2013-10-04 12:34:34 C 00 37 14.698 +08 21 36.45 – L F51
2013-10-05 07:09:47 C 00 36 52.78 +08 04 10.3 – q G96
2013-10-05 07:17:19 C 00 36 52.57 +08 04 03.3 – q G96
2013-10-05 07:24:56 C 00 36 52.37 +08 03 56.3 – q G96
2013-10-05 07:32:33 C 00 36 52.16 +08 03 49.4 – q G96
2013-10-21 01:25:32 C 00 33 11.58 +04 09 09.8 – u 807
2013-10-21 01:33:27 C 00 33 11.57 +04 09 06.4 – u 807
2013-10-21 01:41:22 C 00 33 11.54 +04 09 03.6 – u 807
2013-10-22 05:37:32 C 00 33 12.69 +03 58 28.6 – q G96
2013-10-22 05:45:03 C 00 33 12.64 +03 58 25.5 – q G96
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2013-09-11 05:08:00 -149663.3197 0.1 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)