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
2012-07-26 06:17:11 C 21 14 58.73 -66 49 07.4 u 807
2012-07-26 06:26:01 C 21 14 57.23 -66 49 06.2 u 807
2012-07-26 06:34:54 C 21 14 55.73 -66 49 04.9 u 807
2012-07-26 06:43:43 C 21 14 54.25 -66 49 03.4 u 807
2013-08-29 22:16:39 C 00 04 12.60 +30 51 13.6 r 106
2013-08-29 22:37:42 C 00 04 11.03 +30 51 29.2 r 106
2013-08-29 22:58:45 C 00 04 09.40 +30 51 45.0 r 106
2013-08-29 23:19:50 C 00 04 07.84 +30 52 01.4 r 106
2013-09-29 04:03:57 C 22 49 45.17 +36 46 11.7 q 448
2013-09-29 04:41:08 C 22 49 40.77 +36 46 17.0 q 448
2013-09-29 05:21:30 C 22 49 35.98 +36 46 22.3 q 448
2013-10-03 04:41:27 C 22 38 39.51 +36 53 57.8 q G96
2013-10-03 04:52:35 C 22 38 38.23 +36 53 58.1 q G96
2013-10-03 05:03:51 C 22 38 36.93 +36 53 58.4 q G96
2013-10-03 05:15:04 C 22 38 35.63 +36 53 58.7 q G96
2013-10-22 01:52:33 C 21 55 18.68 +35 44 22.4 q 448
2013-10-22 02:33:00 C 21 55 15.62 +35 44 11.1 q 448
2013-10-22 03:12:43 C 21 55 12.64 +35 44 00.0 q 448
2014-05-16 22:52:47 C 07 39 40.10 +07 47 11.0 u 807
2014-05-16 22:57:19 C 07 39 40.67 +07 47 02.4 u 807
2014-05-16 23:01:40 C 07 39 41.22 +07 46 53.8 u 807
2015-10-03 06:25:31 C 21 23 56.673 -19 57 40.91 L F51
2015-10-03 06:41:20 C 21 23 56.084 -19 57 35.64 L F51
2015-10-03 07:12:57 C 21 23 54.899 -19 57 25.52 L F51
2018-09-11 07:03:47 C 23 33 50.14 +31 58 54.0 V 703
2018-09-11 07:12:05 C 23 33 49.22 +31 58 58.9 V 703
2018-09-11 07:20:22 C 23 33 48.46 +31 59 02.5 V 703
2018-09-11 07:28:45 C 23 33 47.59 +31 59 07.2 V 703
2018-09-21 05:22:33 C 23 08 31.62 +33 37 25.1 V G96
2018-09-21 05:30:02 C 23 08 30.78 +33 37 27.6 V G96
2018-09-21 05:37:33 C 23 08 29.93 +33 37 29.9 V G96
2018-09-21 05:45:04 C 23 08 29.05 +33 37 31.9 V G96
2018-09-27 05:03:40 C 22 52 28.59 +34 10 03.3 U I41
2018-09-27 05:56:07 C 22 52 22.64 +34 10 11.3 U I41
2018-09-27 06:22:26 C 22 52 19.65 +34 10 15.4 U I41
2018-09-27 06:23:44 C 22 52 19.50 +34 10 15.5 U I41
2018-09-28 15:14:04 C 22 48 40.06 +34 14 43.5 q D29
2018-09-28 15:33:10 C 22 48 37.85 +34 14 46.6 q D29
2018-10-07 02:13:07 C 22 26 54.31 +34 19 19.3 V G96
2018-10-07 02:21:18 C 22 26 53.48 +34 19 18.8 V G96
2018-10-07 02:29:30 C 22 26 52.62 +34 19 18.2 V G96
2018-10-07 02:45:21 C 22 26 50.98 +34 19 17.2 V G96
2020-07-23 13:38:18 C 23 09 23.862 -23 58 19.79 U F51
2020-07-23 13:52:20 C 23 09 23.183 -23 58 21.05 U F51
2020-07-23 14:06:21 C 23 09 22.506 -23 58 22.20 U F51
2020-07-23 14:20:22 C 23 09 21.827 -23 58 23.42 U F51
2020-08-10 11:33:06 C 22 43 56.486 -24 28 27.48 U F51
2020-08-10 11:46:59 C 22 43 55.485 -24 28 27.98 U F51
2020-08-10 12:00:57 C 22 43 54.499 -24 28 28.68 U F51
2020-08-17 09:57:40 C 22 31 51.074 -24 31 03.69 U F51