844707 (2017 ER22)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4653683963 ± 4.50e-08
Semi-major axis (a)1.5507113909 AU ± 1.13e-08
Inclination (i)23.89711680° ± 7.47e-06
Long. of Asc. Node (Ω)57.43665056° ± 1.57e-05
Arg. of Perihelion (ω)25.54946555° ± 1.87e-05
Mean Anomaly (M)215.78725215° ± 2.03e-05
Mean Motion (n)0.5104060465°/day ± 5.60e-09
Perihelion dist (q)0.82905932 AU ± 7.01e-08
Aphelion dist (Q)2.27236346 AU ± 7.18e-08
Orbital Period1.93106310 yr ± 2.12e-08
Physical Parameters
H (abs. magnitude)19.52
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.265″
Uncertainty0
Orbit TypeApollo
MOID0.126730 AU
Observations Used147
Oppositions4
Arc Total2017-2025
First Observation Used2017-03-13
Last Observation Used2025-06-22
Observations (154)
Date Type RA Dec Mag Band Observatory
2017-03-13 12:25:15 C 15 42 04.917 +71 52 22.86 L F51
2017-03-13 13:05:55 C 15 41 42.941 +71 51 58.93 L F51
2017-03-13 13:26:11 C 15 41 31.932 +71 51 46.68 L F51
2017-03-13 20:26:27 C 15 37 53.16 +71 46 50.9 19.4 t 104
2017-03-13 20:39:08 C 15 37 46.52 +71 46 42.7 19.4 t 104
2017-03-13 20:51:47 C 15 37 39.98 +71 46 34.7 19.2 t 104
2017-03-14 08:57:28 C 15 31 22.69 +71 38 14.2 u 926
2017-03-14 09:08:08 C 15 31 16.99 +71 38 08.8 u 926
2017-03-14 09:18:46 C 15 31 11.34 +71 38 01.2 u 926
2017-03-15 05:58:20 C 15 20 42.64 +71 21 15.8 o 291
2017-03-15 06:02:44 C 15 20 40.35 +71 21 12.5 o 291
2017-03-15 06:07:10 C 15 20 38.12 +71 21 09.0 o 291
2017-03-15 08:34:22 C 15 19 21.95 +71 19 10.2 u H21
2017-03-15 08:43:05 C 15 19 17.49 +71 19 02.5 u H21
2017-03-15 08:52:01 C 15 19 12.90 +71 18 54.9 u H21
2017-03-15 11:26:50 C 15 17 54.84 +71 16 40.4 q I52
2017-03-15 11:30:53 C 15 17 52.73 +71 16 36.7 q I52
2017-03-15 11:39:02 C 15 17 48.63 +71 16 29.6 q I52
2017-03-16 08:49:28 C 15 07 28.29 +70 56 25.0 o 291
2017-03-16 09:03:16 C 15 07 21.47 +70 56 11.6 o 291
2017-03-16 18:58:52 C 15 02 37.59 +70 45 37.9 q 587
2017-03-16 19:08:04 C 15 02 33.16 +70 45 28.2 q 587
2017-03-16 19:17:17 C 15 02 29.03 +70 45 18.9 q 587
2017-03-16 19:20:30 C 15 02 27.44 +70 45 17.1 o K51
2017-03-16 19:23:09 C 15 02 26.18 +70 45 14.5 o K51
2017-03-16 19:25:49 C 15 02 24.95 +70 45 11.8 o K51
2017-03-16 22:46:20 C 15 00 49.78 +70 41 48.1 S C47
2017-03-16 22:51:39 C 15 00 47.24 +70 41 42.5 S C47
2017-03-16 22:56:58 C 15 00 44.68 +70 41 37.2 S C47
2017-03-16 23:05:59 C 15 00 40.40 +70 41 27.9 S C47
2017-03-17 04:31:22 C 14 58 09.26 +70 35 27.1 o 291
2017-03-17 04:34:53 C 14 58 07.54 +70 35 23.3 o 291
2017-03-17 04:38:26 C 14 58 05.93 +70 35 19.6 o 291
2017-03-17 06:34:54 C 14 57 11.40 +70 33 17.5 u 926
2017-03-17 06:45:14 C 14 57 06.52 +70 33 06.9 u 926
2017-03-17 06:55:35 C 14 57 01.53 +70 32 56.0 u 926
2017-03-21 10:04:46 C 14 15 09.90 +68 20 10.7 u 926
2017-03-21 10:14:34 C 14 15 06.02 +68 19 54.7 u 926
2017-03-21 10:24:21 C 14 15 02.18 +68 19 39.6 u 926
2017-04-03 05:57:49 C 12 54 46.76 +58 19 43.6 q I52
2017-04-03 06:09:04 C 12 54 44.82 +58 19 18.7 q I52
2017-04-03 06:13:01 C 12 54 44.13 +58 19 10.2 q I52
2017-04-03 06:20:27 C 12 54 42.91 +58 18 54.0 q I52
2017-04-03 09:53:42 C 12 54 07.386 +58 11 07.19 L F51
2017-04-03 10:12:19 C 12 54 04.146 +58 10 26.21 L F51
2017-04-03 10:31:01 C 12 54 00.914 +58 09 44.85 L F51
2017-04-03 10:49:40 C 12 53 57.689 +58 09 03.92 L F51
2017-04-07 03:11:53 C 12 41 10.21 +54 51 45.8 t 705
2017-04-07 03:13:21 C 12 41 10.08 +54 51 43.0 t 705
2017-04-07 05:24:05 C 12 40 52.98 +54 46 52.6 o 926