2003 HN16

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2109504959 ± 2.92e-08
Semi-major axis (a)1.2885223155 AU ± 4.42e-10
Inclination (i)26.19019209° ± 1.63e-05
Long. of Asc. Node (Ω)215.44405413° ± 1.91e-06
Arg. of Perihelion (ω)339.11329202° ± 2.81e-05
Mean Anomaly (M)168.80565502° ± 1.97e-05
Mean Motion (n)0.6738672647°/day ± 3.46e-10
Perihelion dist (q)1.01670789 AU ± 3.76e-08
Aphelion dist (Q)1.56033674 AU ± 3.76e-08
Orbital Period1.46264158 yr ± 7.52e-10
Physical Parameters
H (abs. magnitude)22.16
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.467″
Uncertainty0
Orbit TypeApollo
MOID0.021781 AU
Observations Used83
Radar Obs Used3
Oppositions1
Arc Total2003-2025
First Observation Used2003-04-27
Last Observation Used2025-08-31
Observations (88)
Date Type RA Dec Mag Band Observatory
2003-05-03 20:20:37 C 11 47 54.49 +40 25 14.7 c 246
2003-05-03 20:21:06 C 11 47 54.79 +40 25 19.1 c 246
2003-05-03 20:21:33 C 11 47 55.10 +40 25 23.5 c 246
2003-05-03 20:21:59 C 11 47 55.44 +40 25 27.8 c 246
2003-05-03 22:20:55 C 11 49 18.11 +40 44 01.7 d 941
2003-05-03 22:22:14 C 11 49 19.00 +40 44 12.7 d 941
2003-05-03 22:22:53 C 11 49 19.45 +40 44 18.8 d 941
2003-05-03 22:23:32 C 11 49 19.89 +40 44 24.8 d 941
2003-05-03 22:25:28 C 11 49 21.13 +40 44 42.2 d 941
2003-05-07 20:08:29 C 12 48 51.76 +50 24 19.8 c 540
2003-05-07 20:18:07 C 12 48 56.86 +50 24 58.4 c 540
2003-05-07 20:27:43 C 12 49 01.86 +50 25 36.2 c 540
2003-05-26 08:33:50 C 14 58 08.27 +57 24 23.7 o 696
2003-05-26 08:44:46 C 14 58 09.70 +57 24 21.4 o 696
2003-05-30 22:39:21 C 15 11 47.20 +57 05 20.8 c 540
2003-05-30 22:48:25 C 15 11 48.09 +57 05 17.5 c 540
2015-09-17 14:33:31 C 02 58 54.823 +33 57 25.38 t 568
2015-10-13 08:28:43 C 02 43 27.35 +24 19 11.1 t 705
2015-10-13 08:30:35 C 02 43 27.24 +24 19 08.4 t 705
2015-10-13 08:32:27 C 02 43 27.13 +24 19 05.8 t 705
2015-10-13 12:37:58 C 02 43 13.191 +24 13 13.78 t 568
2015-10-13 12:48:53 C 02 43 12.531 +24 12 57.77 t 568
2015-11-06 21:28:26 C 02 03 23.478 +06 43 59.02 q J04
2015-11-06 21:56:24 C 02 03 21.507 +06 43 06.65 q J04
2022-04-23 23:48:34 C 08 11 55.24 -14 55 19.5 u 807
2022-04-23 23:53:08 C 08 11 56.96 -14 54 42.6 u 807
2022-04-23 23:57:41 C 08 11 58.47 -14 54 06.2 u 807
2022-04-30 04:00:20 C 09 13 56.939 +08 36 21.74 V G96
2022-04-30 04:07:47 C 09 14 00.247 +08 37 38.50 V G96
2022-04-30 04:15:12 C 09 14 03.541 +08 38 55.14 V G96
2022-04-30 04:22:38 C 09 14 06.842 +08 40 11.86 V G96
2022-05-19 05:02:34 C 12 42 19.804 +51 01 41.70 V G96
2022-05-19 05:10:49 C 12 42 22.547 +51 01 53.00 V G96
2022-05-19 05:19:03 C 12 42 25.247 +51 02 03.95 V G96
2022-05-19 05:27:17 C 12 42 28.044 +51 02 14.96 V G96
2025-08-31 03:21:35 C 19 32 21.47 +39 25 47.9 o 695
2025-08-31 03:38:51 C 19 32 21.62 +39 25 24.5 o 695
2025-08-31 03:56:08 C 19 32 21.80 +39 25 01.0 o 695
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2003-05-02 00:15:00 -124216.86 3 Hz 2380 -1 -1
2003-05-02 00:28:00 -124740.93 0.3 Hz 2380 -1 -1
2003-05-02 00:51:00 60403706.57 1 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)