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
2021-07-27 05:54:54 C 17 44 27.53 +08 13 29.4 o 291
2021-07-27 05:59:23 C 17 44 28.17 +08 13 22.5 o 291
2021-07-29 07:52:52 C 17 51 49.74 +07 01 55.2 o 291
2021-07-29 08:01:22 C 17 51 50.87 +07 01 43.1 o 291