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
2020-10-28 11:51:38 C 10 35 53.83 +09 14 29.5 V I52
2020-10-28 11:54:03 C 10 35 54.54 +09 14 34.2 V I52
2020-10-28 11:56:28 C 10 35 55.14 +09 14 38.4 V I52
2020-12-06 12:13:42 C 13 47 43.25 +16 16 07.0 V I52
2020-12-06 12:19:32 C 13 47 44.03 +16 16 06.7 V I52
2020-12-06 12:21:57 C 13 47 44.15 +16 16 05.7 V I52
2021-01-04 13:10:57 C 15 05 55.75 +11 29 11.5 V V06
2021-01-04 13:13:31 C 15 05 55.98 +11 29 10.6 V V06
2021-01-04 13:16:05 C 15 05 56.20 +11 29 09.5 V V06
2021-04-05 11:14:13 C 15 42 55.81 +05 25 53.5 V I52
2021-04-05 11:17:50 C 15 42 55.52 +05 25 52.6 V I52
2021-04-05 11:21:28 C 15 42 55.21 +05 25 52.1 V I52
2021-04-06 14:19:23 C 15 40 43.310 +05 21 35.77 U F51
2021-04-06 14:32:38 C 15 40 42.181 +05 21 33.67 U F51
2021-04-06 14:59:12 C 15 40 39.919 +05 21 29.20 U F51
2021-04-08 18:12:10 C 15 36 19.24 +05 12 28.9 q D29
2021-04-08 18:32:32 C 15 36 17.47 +05 12 24.9 q D29
2021-04-12 09:58:51 C 15 28 23.61 +04 54 29.8 V G96
2021-04-12 10:12:12 C 15 28 22.35 +04 54 26.7 V G96
2021-04-12 10:25:43 C 15 28 21.05 +04 54 23.9 V G96
2021-04-12 10:31:54 C 15 28 20.49 +04 54 21.9 V G96
2021-04-14 13:18:33 C 15 23 31.493 +04 42 24.70 U F51
2021-04-14 13:35:42 C 15 23 29.792 +04 42 20.39 U F51
2021-04-14 14:03:33 C 15 23 27.029 +04 42 13.48 U F51
2021-04-14 14:20:36 C 15 23 25.346 +04 42 09.07 U F51
2021-04-24 08:25:42 C 14 59 58.87 +03 30 57.6 V I52
2021-04-24 08:32:41 C 14 59 58.09 +03 30 55.0 V I52
2021-04-24 08:35:43 C 14 59 57.86 +03 30 54.4 V I52
2021-04-24 08:38:44 C 14 59 57.47 +03 30 52.8 V I52
2021-05-09 06:54:51 C 14 25 34.02 +00 58 50.7 V G96
2021-05-09 07:02:20 C 14 25 33.39 +00 58 46.7 V G96
2021-05-09 07:09:50 C 14 25 32.75 +00 58 43.5 V G96
2021-05-09 07:17:19 C 14 25 32.08 +00 58 40.2 V G96
2023-03-18 13:56:55 C 16 31 05.009 -05 23 40.01 U F52
2023-03-18 14:18:21 C 16 31 04.739 -05 23 43.78 U F52
2023-03-18 14:39:40 C 16 31 04.530 -05 23 47.38 U F52
2023-04-24 11:42:48 C 15 47 57.733 -08 20 44.50 U F52
2023-04-24 12:00:24 C 15 47 56.176 -08 20 48.79 U F52
2023-04-24 12:17:58 C 15 47 54.668 -08 20 53.06 U F52
2023-04-25 11:30:51 C 15 45 55.561 -08 26 35.41 X F52
2023-04-25 11:46:25 C 15 45 54.187 -08 26 39.16 X F52
2023-04-25 12:17:31 C 15 45 51.417 -08 26 46.89 X F52
2023-05-15 08:46:51 C 15 02 55.208 -10 31 24.21 X F51
2023-05-15 09:05:31 C 15 02 53.549 -10 31 29.17 X F51
2023-05-15 09:42:33 C 15 02 50.244 -10 31 39.35 X F51
2025-04-28 13:09:57 C 16 18 44.790 -17 10 48.71 X F51
2025-04-28 13:20:36 C 16 18 43.961 -17 10 51.52 X F51
2025-04-28 13:31:17 C 16 18 43.138 -17 10 54.52 X F51
2025-05-23 08:56:41 C 15 28 18.426 -19 34 20.73 X F51
2025-05-23 09:40:40 C 15 28 14.644 -19 34 29.38 X F51