2021 HW3

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5516847759 ± 4.56e-08
Semi-major axis (a)2.5451931708 AU ± 2.25e-08
Inclination (i)16.87157598° ± 1.27e-05
Long. of Asc. Node (Ω)183.25661078° ± 1.82e-05
Arg. of Perihelion (ω)93.08440366° ± 2.34e-05
Mean Anomaly (M)26.76909190° ± 1.01e-05
Mean Motion (n)0.2427343016°/day ± 3.22e-09
Perihelion dist (q)1.14104885 AU ± 1.17e-07
Aphelion dist (Q)3.94933749 AU ± 1.21e-07
Orbital Period4.06051504 yr ± 5.38e-08
Physical Parameters
H (abs. magnitude)21.68
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.235″
Uncertainty0
Orbit TypeAmor
MOID0.325553 AU
Observations Used46
Oppositions9
Arc Total2013-2025
First Observation Used2013-10-13
Last Observation Used2025-03-23
Observations (46)
Date Type RA Dec Mag Band Observatory
2013-10-13 03:18:03 C 00 14 31.71 -03 54 25.8 X W84
2013-10-13 03:20:02 C 00 14 31.66 -03 54 27.6 X W84
2017-05-15 08:35:35 C 18 18 30.19 +31 33 52.1 X W84
2017-05-15 08:39:45 C 18 18 30.81 +31 34 00.1 X W84
2017-09-24 07:50:07 C 22 39 57.619 -00 19 49.92 L F51
2017-09-24 08:08:18 C 22 39 57.853 -00 20 11.34 L F51
2017-09-24 08:26:28 C 22 39 58.124 -00 20 33.73 L F51
2017-09-24 08:44:43 C 22 39 58.356 -00 20 55.58 L F51
2017-09-27 02:49:34 C 22 41 09.93 -01 36 52.3 X W84
2017-09-27 02:51:34 C 22 41 09.96 -01 36 54.5 X W84
2017-09-27 02:53:35 C 22 41 10.00 -01 36 56.8 X W84
2021-04-08 10:42:10 C 13 37 41.778 +04 04 16.97 V F51
2021-04-08 11:00:34 C 13 37 41.465 +04 04 43.51 V F51
2021-04-11 09:55:28 C 13 36 41.973 +05 51 23.48 V F51
2021-04-12 10:29:59 C 13 36 19.080 +06 29 24.71 V F52
2021-04-16 10:04:56 C 13 34 43.209 +09 01 28.20 U F51
2021-04-16 10:47:10 C 13 34 42.244 +09 02 36.58 U F51
2021-04-16 11:08:22 C 13 34 41.793 +09 03 10.45 U F51
2021-04-17 07:28:21 C 13 34 21.089 +09 36 13.38 V F51
2021-04-17 07:46:19 C 13 34 20.717 +09 36 42.58 V F51
2021-04-17 08:04:19 C 13 34 20.334 +09 37 12.13 V F51
2021-04-17 08:22:18 C 13 34 19.939 +09 37 41.52 V F51
2021-04-30 07:05:54 C 13 28 54.227 +18 09 02.75 V F51
2021-04-30 07:25:24 C 13 28 53.861 +18 09 34.34 V F51
2021-04-30 07:44:56 C 13 28 53.477 +18 10 06.02 V F51
2021-05-06 07:11:34 C 13 27 06.38 +21 53 10.2 V G96
2021-05-06 07:19:00 C 13 27 06.35 +21 53 21.1 V G96
2021-05-06 07:26:25 C 13 27 06.19 +21 53 32.9 V G96
2021-05-06 07:33:50 C 13 27 06.15 +21 53 43.1 V G96
2021-05-08 10:45:35 C 13 26 42.015 +23 08 57.69 U F51
2021-05-08 11:28:20 C 13 26 41.545 +23 09 58.54 U F51
2021-05-08 11:49:50 C 13 26 41.326 +23 10 28.97 U F51
2021-05-14 02:30:56 C 13 26 26.96 +26 14 06.4 u H21
2021-05-14 02:38:20 C 13 26 26.95 +26 14 15.8 u H21
2021-05-14 02:45:43 C 13 26 26.93 +26 14 24.8 u H21
2021-07-09 06:33:28 C 14 59 27.80 +36 50 10.0 V V06
2021-07-09 06:44:52 C 14 59 29.35 +36 50 06.0 V V06
2021-07-09 06:56:16 C 14 59 30.84 +36 50 02.4 V V06
2021-07-09 07:07:40 C 14 59 32.40 +36 49 58.1 V V06
2021-07-28 02:47:21 C 16 11 05.58 +31 57 57.4 u H21
2021-07-28 03:00:52 C 16 11 07.87 +31 57 43.8 u H21
2021-07-28 03:10:13 C 16 11 09.46 +31 57 34.2 u H21
2025-03-23 08:21:34 C 12 12 58.504 -01 33 23.08 V V00
2025-03-23 08:29:39 C 12 12 58.169 -01 33 15.55 V V00
2025-03-23 08:37:43 C 12 12 57.830 -01 33 07.92 V V00
2025-03-23 08:45:48 C 12 12 57.496 -01 33 00.04 V V00