2021 ET1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5905632555 ± 1.88e-04
Semi-major axis (a)2.4612821282 AU ± 1.13e-03
Inclination (i)8.42364555° ± 1.97e-03
Long. of Asc. Node (Ω)353.62578229° ± 5.80e-04
Arg. of Perihelion (ω)150.39770910° ± 3.74e-04
Mean Anomaly (M)84.66660322° ± 3.06e-01
Mean Motion (n)0.2552526025°/day ± 1.75e-04
Perihelion dist (q)1.00773934 AU ± 6.54e-04
Aphelion dist (Q)3.91482491 AU ± 1.85e-03
Orbital Period3.86137604 yr ± 2.65e-03
Physical Parameters
H (abs. magnitude)24.59
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.284″
Uncertainty3
Orbit TypeApollo
MOID0.045935 AU
Observations Used74
Oppositions1
Arc Total2021-2021
First Observation Used2021-03-06
Last Observation Used2021-03-23
Observations (76)
Date Type RA Dec Mag Band Observatory
2021-03-08 00:31:51 C 13 46 50.41 +00 57 02.7 V 246
2021-03-10 09:21:24 C 13 45 02.95 -06 51 46.4 V I52
2021-03-10 09:22:00 C 13 45 02.92 -06 51 51.6 V I52
2021-03-10 09:22:37 C 13 45 02.86 -06 51 55.8 V I52
2021-03-10 09:23:13 C 13 45 02.81 -06 51 59.7 V I52
2021-03-12 13:16:53 C 13 43 22.85 -12 18 09.7 V 474
2021-03-12 13:20:20 C 13 43 22.67 -12 18 29.0 V 474
2021-03-12 13:23:47 C 13 43 22.47 -12 18 48.2 V 474
2021-03-13 14:56:13 C 13 42 28.98 -14 32 47.3 V 474
2021-03-13 15:01:23 C 13 42 28.68 -14 33 12.1 V 474
2021-03-15 08:19:33 C 13 41 06.28 -17 40 21.1 o 691
2021-03-15 08:35:24 C 13 41 05.42 -17 41 25.8 o 691
2021-03-15 08:51:12 C 13 41 04.40 -17 42 30.1 o 691
2021-03-17 04:35:21 C 13 39 35.23 -20 21 53.7 u 807
2021-03-17 04:41:22 C 13 39 34.92 -20 22 14.0 u 807
2021-03-17 04:47:19 C 13 39 34.60 -20 22 34.3 u 807
2021-03-18 12:00:08 C 13 38 26.656 -22 00 50.25 U F51
2021-03-18 12:14:18 C 13 38 25.815 -22 01 31.35 U F51
2021-03-18 12:28:26 C 13 38 24.979 -22 02 12.16 U F51
2021-03-18 12:42:34 C 13 38 24.124 -22 02 52.84 U F51
2021-03-22 13:18:07 C 13 35 00.42 -25 50 09.2 V 474
2021-03-22 13:22:21 C 13 35 00.19 -25 50 17.6 V 474
2021-03-22 13:26:35 C 13 34 59.99 -25 50 25.5 V 474
2021-03-23 06:50:17 C 13 34 21.65 -26 22 47.6 u 807
2021-03-23 07:02:04 C 13 34 21.00 -26 23 08.6 u 807
2021-03-23 07:13:54 C 13 34 20.35 -26 23 29.5 u 807