234061 (1999 HE1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5720647791 ± 2.08e-08
Semi-major axis (a)2.3623953835 AU ± 4.07e-09
Inclination (i)8.16235756° ± 5.36e-06
Long. of Asc. Node (Ω)65.79441179° ± 2.13e-05
Arg. of Perihelion (ω)221.98361759° ± 2.21e-05
Mean Anomaly (M)87.44993620° ± 4.92e-06
Mean Motion (n)0.2714459700°/day ± 7.01e-10
Perihelion dist (q)1.01095219 AU ± 4.93e-08
Aphelion dist (Q)3.71383858 AU ± 4.97e-08
Orbital Period3.63102198 yr ± 9.38e-09
Physical Parameters
H (abs. magnitude)17.69
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.359″
Uncertainty0
Orbit TypeApollo
MOID0.052130 AU
Observations Used370
Oppositions19
Arc Total1999-2025
First Observation Used1999-04-18
Last Observation Used2025-12-26
Observations (448)
Date Type RA Dec Mag Band Observatory
2021-10-27 12:11:45 C 03 03 13.448 +10 07 49.13 U F52
2021-10-27 12:30:42 C 03 03 12.119 +10 07 47.74 U F52
2021-10-27 12:49:25 C 03 03 10.810 +10 07 46.22 U F52
2021-10-27 13:08:03 C 03 03 09.513 +10 07 44.69 U F52
2021-10-28 07:40:03 C 03 01 54.34 +10 06 18.6 V 703
2021-10-28 07:44:21 C 03 01 54.20 +10 06 18.6 V G96
2021-10-28 07:51:49 C 03 01 53.67 +10 06 18.3 V G96
2021-10-28 07:55:14 C 03 01 53.38 +10 06 17.7 V 703
2021-10-28 07:59:16 C 03 01 53.14 +10 06 17.5 V G96
2021-10-28 08:02:50 C 03 01 52.87 +10 06 17.2 V 703
2021-10-28 08:06:43 C 03 01 52.63 +10 06 17.1 V G96
2021-10-31 07:42:49 C 02 57 03.03 +10 01 03.9 V 703
2021-10-31 07:50:23 C 02 57 02.43 +10 01 04.0 V 703
2021-10-31 07:52:39 C 02 57 02.761 +10 01 05.10 U F51
2021-10-31 08:05:29 C 02 57 01.50 +10 01 02.9 V 703
2021-10-31 08:08:27 C 02 57 01.673 +10 01 04.13 U F51
2021-10-31 08:24:15 C 02 57 00.592 +10 01 03.03 U F51
2021-10-31 08:40:05 C 02 56 59.500 +10 01 01.97 U F51
2021-11-01 10:46:57 C 02 55 14.66 +09 59 14.7 V T05
2021-11-01 10:51:35 C 02 55 14.32 +09 59 14.4 V T05
2021-11-01 11:05:51 C 02 55 13.35 +09 59 13.1 V T05
2021-11-01 11:13:51 C 02 55 12.75 +09 59 13.2 V T05
2021-11-03 06:19:25 C 02 52 22.20 +09 56 21.5 V 703
2021-11-03 06:26:59 C 02 52 21.75 +09 56 21.2 V 703
2021-11-03 06:34:32 C 02 52 21.28 +09 56 21.3 V 703
2021-11-03 06:42:06 C 02 52 20.80 +09 56 21.6 V 703
2021-11-03 13:38:26 C 02 51 53.765 +09 56 02.76 V P07
2021-11-03 14:59:25 C 02 51 48.293 +09 55 57.29 V P07
2021-11-03 14:59:33 C 02 51 48.331 +09 55 57.07 V P07
2021-11-03 16:02:46 C 02 51 44.064 +09 55 53.76 V P07
2021-11-03 17:07:53 C 02 51 39.646 +09 55 50.09 V P07
2021-11-03 18:02:19 C 02 51 36.026 +09 55 46.20 V P07
2021-11-03 19:08:22 C 02 51 31.596 +09 55 42.71 V P07
2021-11-03 20:01:10 C 02 51 28.058 +09 55 38.82 V P07
2021-11-04 13:41:16 C 02 50 19.999 +09 54 35.60 V P07
2021-11-04 16:03:40 C 02 50 10.500 +09 54 27.04 V P07
2021-11-04 17:06:16 C 02 50 06.300 +09 54 22.86 V P07
2021-11-04 18:51:14 C 02 49 59.366 +09 54 17.28 V P07
2021-11-04 19:45:16 C 02 49 55.800 +09 54 12.78 V P07
2021-11-06 11:15:00 C 02 47 24.818 +09 51 56.89 U F52
2021-11-06 11:32:30 C 02 47 23.684 +09 51 55.93 U F52
2021-11-06 11:49:57 C 02 47 22.550 +09 51 54.96 U F52
2021-11-07 06:47:01 C 02 46 11.45 +09 50 54.7 V 703
2021-11-07 06:54:34 C 02 46 11.02 +09 50 55.4 V 703
2021-11-07 07:02:08 C 02 46 10.46 +09 50 54.7 V 703
2021-11-07 07:09:41 C 02 46 09.99 +09 50 54.0 V 703
2021-11-08 13:39:42 C 02 44 17.167 +09 49 34.32 V P07
2021-11-08 14:52:42 C 02 44 12.552 +09 49 31.15 V P07
2021-11-08 15:45:40 C 02 44 09.18 +09 49 21.6 V D29
2021-11-08 15:53:20 C 02 44 08.755 +09 49 28.88 V P07