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
1999-04-23 06:12:55 C 12 26 49.99 +13 06 53.4 658
1999-04-23 06:18:05 C 12 26 49.60 +13 06 54.3 658
1999-04-23 06:22:44 C 12 26 49.21 +13 06 55.1 658
1999-04-30 12:10:20 C 12 15 24.24 +13 13 05.8 z 402
1999-04-30 12:12:09 C 12 15 24.25 +13 13 06.7 z 402
1999-04-30 12:15:46 C 12 15 24.03 +13 13 05.4 z 402
1999-05-07 13:48:44 C 12 05 45.60 +12 52 03.0 360
1999-05-07 13:54:14 C 12 05 45.35 +12 52 01.1 360
1999-05-07 14:00:15 C 12 05 44.97 +12 51 59.9 360
1999-05-09 20:29:57 C 12 03 05.23 +12 39 24.5 c 118
1999-05-09 20:36:49 C 12 03 04.82 +12 39 22.9 c 118
1999-05-09 20:54:48 C 12 03 03.94 +12 39 19.1 c 118
1999-05-26 03:00:31 C 11 51 32.49 +09 51 29.9 z 711
1999-05-26 03:14:02 C 11 51 32.32 +09 51 22.1 z 711
1999-05-27 02:53:39 C 11 51 17.60 +09 37 02.6 z 711
1999-05-27 03:05:58 C 11 51 17.45 +09 36 56.1 z 711
1999-06-04 12:22:30 C 11 51 14.64 +07 17 31.3 360
1999-06-04 12:28:15 C 11 51 14.65 +07 17 26.9 360
1999-06-23 09:17:28 C 12 03 42.26 +00 11 22.5 426
1999-06-23 09:24:53 C 12 03 42.56 +00 11 14.2 426
1999-06-23 09:30:49 C 12 03 42.82 +00 11 07.8 426
1999-06-23 09:37:20 C 12 03 43.06 +00 11 00.2 426
1999-08-03 09:01:22 C 13 30 04.94 -26 02 38.1 413
1999-08-03 09:03:50 C 13 30 05.30 -26 02 43.2 413
1999-08-03 09:06:43 C 13 30 05.72 -26 02 49.6 413
1999-08-04 10:32:51 C 13 33 57.79 -26 57 46.5 413
1999-08-04 10:35:20 C 13 33 58.19 -26 57 51.6 413
1999-08-04 10:37:37 C 13 33 58.50 -26 57 56.9 413
1999-09-28 15:07:26 C 20 45 56.33 -42 18 46.9 413
1999-09-28 15:09:24 C 20 45 56.80 -42 18 43.8 413
1999-10-02 12:47:21 C 21 06 53.34 -39 39 14.7 d 426
1999-10-02 12:51:21 C 21 06 54.15 -39 39 07.9 d 426
1999-10-02 12:56:23 C 21 06 55.10 -39 38 59.9 d 426
2002-02-13 07:30:47 C 08 54 08.57 +28 28 13.9 c 696
2002-02-13 07:36:26 C 08 54 08.40 +28 28 15.4 c 696
2002-02-13 07:42:23 C 08 54 08.10 +28 28 16.2 c 696
2002-02-14 06:29:53 C 08 53 04.07 +28 31 58.5 c 696
2002-02-14 06:35:40 C 08 53 03.85 +28 31 59.8 c 696
2003-11-19 04:20:19 C 03 54 09.69 +18 34 52.7 c 691
2003-11-19 04:59:50 C 03 54 07.29 +18 34 50.5 c 691
2003-11-19 05:38:59 C 03 54 04.93 +18 34 48.5 c 691
2003-11-30 06:17:09 C 03 39 05.68 +18 18 03.9 c 691
2003-11-30 06:56:50 C 03 39 03.49 +18 18 01.4 c 691
2003-11-30 07:37:05 C 03 39 01.36 +18 17 58.8 c 691
2003-12-01 06:58:17 C 03 37 48.18 +18 16 33.8 d 291
2003-12-01 07:33:26 C 03 37 46.29 +18 16 31.6 d 291
2003-12-01 08:12:27 C 03 37 44.31 +18 16 29.0 d 291
2010-01-15 08:34:48 S 13 38 15.83 -00 33 26.9 L C51
2010-01-15 11:45:19 S 13 38 27.80 -00 34 13.8 L C51
2010-01-15 11:45:30 S 13 38 27.80 -00 34 14.3 L C51