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
2021-11-08 16:06:02 C 02 44 07.90 +09 49 20.5 V D29
2021-11-08 16:26:24 C 02 44 06.63 +09 49 19.4 V D29
2021-11-08 17:50:18 C 02 44 01.358 +09 49 23.38 V P07
2021-11-09 06:46:44 C 02 43 14.46 +09 48 42.2 V G96
2021-11-09 06:54:11 C 02 43 13.99 +09 48 42.1 V G96
2021-11-09 07:01:38 C 02 43 13.52 +09 48 41.8 V G96
2021-11-09 07:09:04 C 02 43 13.07 +09 48 41.3 V G96
2021-11-11 07:26:36 C 02 40 21.468 +09 46 52.12 U F51
2021-11-11 07:34:44 C 02 40 20.981 +09 46 51.88 U F52
2021-11-11 07:41:29 C 02 40 20.578 +09 46 51.66 U F51
2021-11-11 07:49:27 C 02 40 20.100 +09 46 51.42 U F52
2021-11-11 07:56:23 C 02 40 19.684 +09 46 51.20 U F51
2021-11-11 08:04:08 C 02 40 19.214 +09 46 50.97 U F52
2021-11-11 08:11:18 C 02 40 18.786 +09 46 50.71 U F51
2021-11-11 13:46:45 C 02 39 59.410 +09 46 45.41 V P07
2021-11-11 13:48:22 C 02 39 59.275 +09 46 45.52 V P07
2021-11-11 14:47:20 C 02 39 55.774 +09 46 42.82 V P07
2021-11-11 14:50:59 C 02 39 55.510 +09 46 42.96 V P07
2021-11-11 15:54:40 C 02 39 51.744 +09 46 41.30 V P07
2021-11-11 17:51:01 C 02 39 44.794 +09 46 35.87 V P07
2021-11-12 16:47:26 C 02 38 26.25 +09 45 48.9 V D29
2021-11-12 16:48:43 C 02 38 26.20 +09 45 48.1 V D29
2021-11-12 17:07:48 C 02 38 25.06 +09 45 48.2 V D29
2021-11-12 17:09:05 C 02 38 25.00 +09 45 48.1 V D29
2021-11-12 17:29:26 C 02 38 23.80 +09 45 47.3 V D29
2021-11-13 17:20:30 C 02 37 03.82 +09 45 11.3 V D29
2021-11-13 17:45:57 C 02 37 02.41 +09 45 09.8 V D29
2021-11-13 18:11:24 C 02 37 01.00 +09 45 09.6 V D29
2021-11-14 04:22:51 C 02 36 27.90 +09 44 56.1 V G96
2021-11-14 04:33:05 C 02 36 27.30 +09 44 55.8 V G96
2021-11-14 04:43:19 C 02 36 26.75 +09 44 55.6 V G96
2021-11-14 04:53:35 C 02 36 26.16 +09 44 55.4 V G96
2021-11-27 10:28:44 C 02 22 03.769 +09 48 29.08 U F52
2021-11-27 10:44:15 C 02 22 03.191 +09 48 30.03 U F52
2021-11-27 10:59:48 C 02 22 02.637 +09 48 30.50 U F52
2021-11-27 11:15:24 C 02 22 02.041 +09 48 31.25 U F52
2021-11-30 03:10:29 C 02 19 55.41 +09 51 49.0 V G96
2021-11-30 03:18:31 C 02 19 55.12 +09 51 49.1 V G96
2021-11-30 03:26:33 C 02 19 54.89 +09 51 49.8 V G96
2024-02-08 09:05:43 C 10 01 57.393 +24 36 51.39 X F52
2024-02-08 09:23:30 C 10 01 56.535 +24 36 57.14 X F52
2024-02-08 09:41:22 C 10 01 55.678 +24 37 02.60 X F52
2024-02-12 12:48:02 C 09 57 10.098 +25 06 36.79 X F52
2024-02-12 13:04:51 C 09 57 09.232 +25 06 41.79 X F52
2024-02-12 13:21:36 C 09 57 08.401 +25 06 46.37 X F52
2025-12-26 06:36:30 C 04 27 37.022 +23 58 57.00 X F52
2025-12-26 07:08:20 C 04 27 35.687 +23 58 55.38 X F52
2025-12-26 07:24:22 C 04 27 35.066 +23 58 54.38 X F52