IAA RAS IAA Minor Planet Database

2021 NP1

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5558492996 ± 3.66e-04
Semi-major axis (a)1.9518194707 AU ± 1.48e-03
Inclination (i)8.17213631° ± 2.90e-03
Long. of Asc. Node (Ω)235.25114866° ± 1.03e-02
Arg. of Perihelion (ω)342.11854403° ± 1.33e-02
Mean Anomaly (M)234.67002071° ± 6.87e-01
Mean Motion (n)0.3614538101°/day ± 4.10e-04
Perihelion dist (q)0.86690198 AU ± 9.69e-04
Aphelion dist (Q)3.03673696 AU ± 2.40e-03
Orbital Period2.72683883 yr ± 3.09e-03
Physical Parameters
H (abs. magnitude)21.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.205″
Uncertainty3
Orbit TypeApollo
MOID0.079002 AU
Observations Used47
Oppositions1
Arc Total2021-2021
First Observation Used2021-07-07
Last Observation Used2021-07-27
Observations (54)
Date Type RA Dec Mag Band Observatory
2021-07-07 05:28:43 C 15 22 51.07 +25 44 23.7 – V G96
2021-07-07 05:36:14 C 15 22 54.96 +25 44 03.6 – V G96
2021-07-07 05:43:45 C 15 22 58.82 +25 43 43.5 – V G96
2021-07-07 05:51:16 C 15 23 02.73 +25 43 23.1 – V G96
2021-07-07 07:59:23 C 15 24 09.08 +25 37 36.3 – V G96
2021-07-07 07:59:58 C 15 24 09.40 +25 37 34.2 – V G96
2021-07-07 08:00:33 C 15 24 09.77 +25 37 33.0 – V G96
2021-07-07 08:01:08 C 15 24 09.99 +25 37 31.2 – V G96
2021-07-07 18:21:30 C 15 29 32.80 +25 10 04.5 – V N51
2021-07-07 18:29:59 C 15 29 36.99 +25 09 42.4 – V N51
2021-07-07 21:29:10 C 15 31 09.74 +25 01 31.9 – V 033
2021-07-07 21:29:50 C 15 31 10.06 +25 01 30.2 – V 033
2021-07-07 21:30:29 C 15 31 10.39 +25 01 28.3 – V 033
2021-07-07 21:31:32 C 15 31 10.92 +25 01 25.5 – V 033
2021-07-07 22:20:40 C 15 31 35.11 +24 59 16.4 – V L01
2021-07-07 22:21:54 C 15 31 35.71 +24 59 12.6 – V L01
2021-07-07 22:23:08 C 15 31 36.32 +24 59 09.9 – V L01
2021-07-07 22:24:23 C 15 31 36.94 +24 59 06.4 – V L01
2021-07-07 22:25:38 C 15 31 37.52 +24 59 03.0 – V L01
2021-07-08 02:34:32 C 15 33 44.71 +24 48 04.7 – u H21
2021-07-08 02:38:34 C 15 33 46.68 +24 47 54.0 – u H21
2021-07-08 02:42:37 C 15 33 48.64 +24 47 43.2 – u H21
2021-07-08 04:49:36 C 15 34 51.91 +24 42 06.8 – V 654
2021-07-08 05:30:24 C 15 35 11.61 +24 40 16.6 – V 654
2021-07-08 06:17:03 C 15 35 34.16 +24 38 09.7 – V 654
2021-07-08 18:26:36 C 15 41 32.38 +24 06 13.2 – V L81
2021-07-08 18:39:22 C 15 41 38.32 +24 05 39.1 – V L81
2021-07-08 18:52:51 C 15 41 44.57 +24 05 02.3 – V L81
2021-07-08 19:06:23 C 15 41 50.83 +24 04 26.5 – V L81
2021-07-09 02:49:01 C 15 45 29.14 +23 42 43.3 – u H21
2021-07-09 02:53:03 C 15 45 31.00 +23 42 32.4 – u H21
2021-07-09 02:57:04 C 15 45 32.81 +23 42 21.5 – u H21
2021-07-09 03:36:08 C 15 45 51.07 +23 40 36.2 – q H36
2021-07-09 03:48:38 C 15 45 56.73 +23 40 03.1 – q H36
2021-07-09 03:59:03 C 15 46 01.42 +23 39 34.4 – q H36
2021-07-09 04:29:49 C 15 46 16.48 +23 38 15.6 – V 654
2021-07-09 05:12:08 C 15 46 35.58 +23 36 20.9 – V 654
2021-07-09 06:13:13 C 15 47 03.17 +23 33 34.5 – V 654
2021-07-10 21:15:50 C 16 04 12.00 +21 48 19.9 – V 033
2021-07-10 21:16:31 C 16 04 12.25 +21 48 18.3 – V 033
2021-07-10 21:17:10 C 16 04 12.54 +21 48 16.4 – V 033
2021-07-10 21:17:54 C 16 04 12.82 +21 48 14.4 – V 033
2021-07-14 20:48:45 C 16 38 51.25 +17 44 21.8 – V 033
2021-07-14 20:49:34 C 16 38 51.52 +17 44 19.7 – V 033
2021-07-14 20:50:23 C 16 38 51.78 +17 44 17.7 – V 033
2021-07-14 20:51:19 C 16 38 52.06 +17 44 15.5 – V 033
2021-07-15 20:28:24 C 16 46 04.74 +16 48 16.5 – V 595
2021-07-15 20:40:51 C 16 46 08.32 +16 47 47.3 – V 595
2021-07-15 20:53:18 C 16 46 11.88 +16 47 19.1 – V 595
2021-07-27 05:50:22 C 17 44 26.88 +08 13 35.8 – o 291