197588 (2004 HE12)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4659909184 ± 6.21e-08
Semi-major axis (a)1.8453321201 AU ± 4.34e-09
Inclination (i)42.71780691° ± 8.91e-06
Long. of Asc. Node (Ω)338.02510849° ± 6.73e-06
Arg. of Perihelion (ω)162.23138358° ± 9.05e-06
Mean Anomaly (M)226.71104198° ± 1.15e-05
Mean Motion (n)0.3931881897°/day ± 1.39e-09
Perihelion dist (q)0.98542411 AU ± 1.15e-07
Aphelion dist (Q)2.70524013 AU ± 1.15e-07
Orbital Period2.50675455 yr ± 8.85e-09
Physical Parameters
H (abs. magnitude)17.12
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.240″
Uncertainty0
Orbit TypeApollo
MOID0.010214 AU
Observations Used200
Oppositions15
Arc Total2000-2025
First Observation Used2000-09-21
Last Observation Used2025-09-16
Observations (208)
Date Type RA Dec Mag Band Observatory
2000-09-21 04:12:09 C 21 42 21.20 -18 31 31.9 695
2000-09-21 06:15:24 C 21 42 14.18 -18 31 02.1 695
2004-04-20 03:21:03 C 06 19 58.24 +22 06 19.3 d 291
2004-04-20 03:34:47 C 06 20 00.65 +22 05 46.7 d 291
2004-04-20 03:48:06 C 06 20 03.03 +22 05 14.6 d 291
2004-04-21 03:21:29 C 06 24 12.35 +21 08 41.4 c 673
2004-04-21 03:25:30 C 06 24 13.06 +21 08 31.8 c 673
2004-04-21 03:31:20 C 06 24 14.04 +21 08 18.0 c 673
2004-04-21 03:47:26 C 06 24 16.82 +21 07 38.8 c 691
2004-04-21 03:50:10 C 06 24 17.28 +21 07 32.8 c 673
2004-04-21 03:50:11 C 06 24 17.29 +21 07 32.3 c 691
2004-04-21 03:53:40 C 06 24 17.85 +21 07 24.8 c 673
2004-04-21 04:01:50 C 06 24 19.31 +21 07 05.1 c 673
2004-04-21 04:04:22 C 06 24 19.71 +21 06 58.3 d 291
2004-04-22 03:16:56 C 06 28 20.39 +20 11 19.7 d 291
2004-04-22 03:38:00 C 06 28 24.01 +20 10 27.9 d 291
2004-04-22 03:43:48 C 06 28 24.94 +20 10 14.3 d 291
2004-04-23 03:13:54 C 06 32 23.83 +19 13 58.9 d 291
2004-04-23 03:19:36 C 06 32 24.77 +19 13 45.4 d 291
2004-04-25 20:57:30 C 06 43 07.65 +16 37 33.9 c 950
2004-04-25 20:58:30 C 06 43 07.81 +16 37 31.5 c 950
2004-04-25 20:59:29 C 06 43 07.97 +16 37 29.1 c 950
2004-04-25 21:00:28 C 06 43 08.11 +16 37 26.7 c 950
2004-04-25 21:01:28 C 06 43 08.27 +16 37 24.3 c 950
2004-04-25 21:02:27 C 06 43 08.43 +16 37 21.9 c 950
2004-05-02 03:36:56 C 07 05 45.16 +10 48 23.7 c 926
2004-05-02 03:38:43 C 07 05 45.48 +10 48 18.6 c 926
2004-05-02 09:08:53 C 07 06 32.455 +10 36 03.19 r 413
2004-05-02 09:22:51 C 07 06 34.40 +10 35 31.3 r 413
2004-05-03 03:21:29 C 07 09 06.02 +09 54 55.5 r 448
2004-05-03 03:38:30 C 07 09 08.32 +09 54 16.2 r 448
2004-05-03 03:47:07 C 07 09 09.55 +09 53 57.4 r 448
2004-05-04 03:41:45 C 07 12 28.42 +09 00 43.9 c 926
2004-05-04 03:43:33 C 07 12 28.92 +09 00 39.0 c 926
2004-05-04 03:45:20 C 07 12 29.06 +09 00 34.6 c 926
2005-08-24 09:31:56 C 22 26 54.972 -21 07 27.43 o 568
2005-08-24 09:37:47 C 22 26 54.516 -21 07 27.18 o 568
2008-08-04 08:28:23 C 00 35 41.27 +24 05 27.8 o H55
2008-08-04 08:37:47 C 00 35 41.08 +24 05 35.5 o H55
2008-08-04 08:47:35 C 00 35 40.89 +24 05 44.0 o H55
2008-08-04 08:57:24 C 00 35 40.70 +24 05 52.2 o H55
2008-09-22 06:09:48 C 23 12 23.64 +38 31 30.8 o H55
2008-09-22 06:19:16 C 23 12 22.47 +38 31 34.0 o H55
2008-09-22 06:28:43 C 23 12 21.26 +38 31 37.5 o H55
2008-09-22 06:38:10 C 23 12 20.15 +38 31 40.8 o H55
2008-09-24 03:48:47 C 23 06 52.12 +38 46 40.7 r 703
2008-09-24 03:59:21 C 23 06 50.90 +38 46 43.6 r 703
2008-09-24 04:09:55 C 23 06 49.46 +38 46 46.9 r 703
2008-09-24 04:20:17 C 23 06 48.27 +38 46 51.1 r 703
2012-07-26 06:08:22 C 21 15 00.19 -66 49 08.9 u 807