2021 PC9

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6672615670 ± 1.32e-06
Semi-major axis (a)1.8472999781 AU ± 2.87e-08
Inclination (i)11.30159211° ± 4.70e-05
Long. of Asc. Node (Ω)315.37004632° ± 7.23e-05
Arg. of Perihelion (ω)267.88198895° ± 2.75e-04
Mean Anomaly (M)284.42648590° ± 3.18e-05
Mean Motion (n)0.3925600846°/day ± 9.15e-09
Perihelion dist (q)0.61466770 AU ± 2.45e-06
Aphelion dist (Q)3.07993226 AU ± 2.45e-06
Orbital Period2.51076541 yr ± 5.85e-08
Physical Parameters
H (abs. magnitude)21.20
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-11
RMS Residual0.180″
Uncertainty0
Orbit TypeApollo
MOID0.004027 AU
Observations Used53
Oppositions3
Arc Total2016-2021
First Observation Used2021-08-11
Last Observation Used2016-08-30
Observations (12)
Date Type RA Dec Mag Band Observatory
2016-08-15 11:59:11 C 00 18 25.700 +14 49 13.08 V F51
2016-08-15 12:16:08 C 00 18 23.591 +14 49 11.97 V F51
2016-08-26 12:25:20 C 23 45 57.002 +13 44 28.20 V F51
2016-08-26 12:27:14 C 23 45 56.776 +13 44 27.20 V F51
2016-08-26 12:45:51 C 23 45 54.430 +13 44 20.24 V F51
2016-08-26 13:02:49 C 23 45 52.326 +13 44 14.25 V F51
2016-08-26 13:04:41 C 23 45 52.114 +13 44 13.96 V F51
2016-08-26 13:21:33 C 23 45 50.001 +13 44 07.68 V F51
2016-08-26 13:23:24 C 23 45 49.742 +13 44 07.32 V F51
2016-08-30 07:29:23 C 23 35 05.968 +13 08 15.86 V G96
2016-08-30 07:50:19 C 23 35 03.440 +13 08 07.33 V G96
2016-08-30 08:00:30 C 23 35 02.209 +13 08 02.80 V G96