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
2013-09-05 09:41:03 C 01 07 47.83 +34 47 27.6 u H21
2013-09-05 09:44:27 C 01 07 47.46 +34 47 10.4 u H21
2013-09-05 18:12:01 C 01 07 07.49 +34 05 11.9 168
2013-09-05 18:14:26 C 01 07 07.23 +34 04 59.6 168
2013-09-05 18:17:11 C 01 07 06.95 +34 04 46.9 168
2013-09-05 19:13:06 C 01 07 01.51 +34 00 21.4 168
2013-09-05 19:16:41 C 01 07 01.17 +34 00 04.0 168
2013-09-05 19:20:11 C 01 07 00.87 +33 59 48.3 168
2013-09-05 21:11:56 C 01 06 52.78 +33 50 54.9 q A48
2013-09-05 21:16:59 C 01 06 52.28 +33 50 31.4 q A48
2013-09-05 21:21:40 C 01 06 51.72 +33 50 10.0 q A48
2013-09-05 21:25:59 C 01 06 51.47 +33 49 49.8 q A48
2013-09-05 21:52:26 C 01 06 45.56 +33 47 42.7 168
2013-09-06 02:21:29 C 01 06 21.20 +33 26 32.0 o 046
2013-09-06 02:25:06 C 01 06 20.82 +33 26 16.5 o 046
2013-09-06 02:26:13 C 01 06 20.72 +33 26 10.2 o 046
2013-09-06 02:28:26 C 01 06 20.45 +33 26 00.3 o 046
2013-09-06 19:38:46 C 01 05 01.41 +32 06 56.2 u K90
2013-09-06 19:39:51 C 01 05 01.33 +32 06 51.0 u K90
2013-09-06 19:41:12 C 01 05 01.26 +32 06 45.6 u K90
2013-09-06 19:42:19 C 01 05 01.15 +32 06 40.6 u K90
2013-09-06 19:43:37 C 01 05 01.05 +32 06 35.2 u K90
2013-09-10 05:59:39 C 00 59 10.96 +26 41 50.4 r Y00
2013-09-10 06:01:27 C 00 59 10.68 +26 41 42.3 r Y00
2013-09-10 06:03:13 C 00 59 10.47 +26 41 35.2 r Y00
2013-09-10 08:25:17 C 00 59 02.80 +26 32 23.9 q H45
2013-09-10 08:26:59 C 00 59 02.65 +26 32 17.8 q H45
2013-09-10 08:28:40 C 00 59 02.51 +26 32 11.9 q H45
2013-09-10 08:30:27 C 00 59 02.37 +26 32 05.5 q H45
2013-09-10 08:32:02 C 00 59 02.25 +26 32 00.0 q H45
2013-09-10 08:33:41 C 00 59 02.13 +26 31 53.9 q H45
2013-09-10 08:35:14 C 00 59 02.00 +26 31 48.6 q H45
2013-09-10 08:37:05 C 00 59 01.85 +26 31 41.9 q H45
2013-09-12 21:25:56 C 00 55 34.72 +23 16 15.5 q D00
2013-09-12 21:42:46 C 00 55 33.67 +23 15 27.0 q D00
2013-09-12 21:59:41 C 00 55 32.47 +23 14 35.2 q D00
2013-09-12 22:16:35 C 00 55 31.37 +23 13 47.6 q D00
2013-09-14 06:51:46 C 00 53 50.88 +21 41 43.6 q H45
2013-09-14 06:55:03 C 00 53 50.67 +21 41 34.2 q H45
2013-09-14 06:56:31 C 00 53 50.60 +21 41 30.4 q H45
2013-09-14 06:58:16 C 00 53 50.49 +21 41 25.8 q H45
2013-09-14 06:59:56 C 00 53 50.34 +21 41 21.0 q H45
2013-09-14 07:01:31 C 00 53 50.26 +21 41 16.0 q H45
2013-09-14 07:03:25 C 00 53 50.13 +21 41 11.2 q H45
2013-09-14 07:08:31 C 00 53 49.78 +21 40 57.4 q H45
2013-09-15 10:51:46 C 00 52 27.01 +20 28 22.5 q 703
2013-09-15 10:59:00 C 00 52 26.55 +20 28 03.7 q 703
2013-09-15 11:06:12 C 00 52 26.15 +20 27 45.0 q 703
2013-09-15 11:13:45 C 00 52 25.68 +20 27 26.7 q 703
2013-09-16 06:25:23 C 00 51 32.34 +19 40 47.6 r Y00
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)