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
2017-04-07 05:33:55 C 12 40 51.67 +54 46 31.5 o 926
2017-04-11 07:17:46 C 12 30 05.64 +51 06 26.5 t 705
2017-04-11 07:19:14 C 12 30 05.51 +51 06 23.2 t 705
2017-04-11 07:20:42 C 12 30 05.38 +51 06 20.0 t 705
2017-04-19 04:57:30 C 12 16 29.91 +44 08 02.6 20.1 U H21
2017-04-19 05:08:20 C 12 16 29.36 +44 07 39.5 20.6 U H21
2017-04-19 05:19:12 C 12 16 28.78 +44 07 16.3 20.5 U H21
2017-04-26 04:27:08 C 12 10 05.34 +38 20 11.2 q G96
2017-04-26 04:33:16 C 12 10 05.22 +38 19 58.5 q G96
2017-04-26 04:39:23 C 12 10 05.06 +38 19 47.0 q G96
2017-04-26 04:45:33 C 12 10 04.83 +38 19 35.1 q G96
2017-05-03 04:34:43 C 12 07 18.17 +32 58 09.9 q I52
2017-05-03 04:36:49 C 12 07 18.11 +32 58 06.8 q I52
2017-05-03 04:38:55 C 12 07 18.09 +32 58 02.1 q I52
2017-05-03 04:41:00 C 12 07 18.07 +32 57 58.5 q I52
2017-05-31 06:39:47 C 12 16 52.24 +16 03 56.2 o 291
2017-05-31 06:57:40 C 12 16 52.83 +16 03 33.2 o 291
2018-08-03 15:03:41 C 01 15 50.738 -50 15 29.13 V T12
2018-08-07 14:56:12 C 01 23 14.784 -51 49 39.70 V T12
2018-10-01 13:29:01 C 01 38 35.33 -75 30 45.4 V 474
2018-10-01 13:32:03 C 01 38 34.72 -75 30 48.2 V 474
2018-10-01 13:35:05 C 01 38 34.18 -75 30 51.3 V 474
2018-10-01 13:38:09 C 01 38 33.68 -75 30 54.0 V 474
2019-02-12 12:07:56 C 16 19 10.07 +26 20 23.5 V I52
2019-02-12 12:28:28 C 16 19 09.93 +26 20 24.7 V I52
2019-02-12 12:50:53 C 16 19 09.77 +26 20 25.0 V I52
2019-03-06 10:54:02 C 16 04 10.04 +27 02 07.3 V G96
2019-03-06 11:01:31 C 16 04 09.58 +27 02 08.2 V G96
2019-03-06 11:09:01 C 16 04 09.12 +27 02 08.8 V G96
2019-03-06 11:16:28 C 16 04 08.65 +27 02 09.6 V G96
2019-03-11 20:28:40 C 15 55 37.78 +27 13 17.0 q D29
2019-03-11 20:49:02 C 15 55 36.11 +27 13 18.6 q D29
2019-03-11 21:09:24 C 15 55 34.39 +27 13 19.9 q D29
2019-03-31 09:56:32 C 15 07 39.77 +26 32 32.1 V 703
2019-03-31 10:19:40 C 15 07 36.78 +26 32 24.5 V 703
2019-04-07 13:52:52 C 14 45 33.993 +25 21 04.89 U F51
2019-04-07 14:13:05 C 14 45 31.283 +25 20 53.97 U F51
2019-04-07 14:33:16 C 14 45 28.575 +25 20 43.10 U F51
2019-04-07 14:53:36 C 14 45 25.858 +25 20 32.16 U F51
2019-04-26 11:17:31 C 13 51 25.92 +19 33 29.3 V I52
2019-04-26 11:19:19 C 13 51 25.72 +19 33 27.8 V I52
2019-04-26 11:21:06 C 13 51 25.56 +19 33 26.4 V I52
2019-04-27 07:31:20 C 13 49 26.88 +19 14 20.8 V G96
2019-04-27 07:41:48 C 13 49 25.82 +19 14 11.1 V G96
2019-04-27 07:49:13 C 13 49 25.08 +19 14 03.4 V G96
2019-04-27 07:56:39 C 13 49 24.35 +19 13 56.4 V G96
2020-09-15 11:36:37 C 05 43 01.87 -26 33 09.4 V I52
2020-09-15 11:38:26 C 05 43 02.34 -26 33 07.5 V I52
2020-09-15 11:40:15 C 05 43 02.70 -26 33 05.4 V I52
2020-09-15 11:42:04 C 05 43 03.05 -26 33 03.5 V I52