480817 (1998 SJ2)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5021491900 ± 7.13e-08
Semi-major axis (a)2.3283702979 AU ± 1.15e-08
Inclination (i)10.39286544° ± 1.19e-05
Long. of Asc. Node (Ω)8.66213886° ± 2.69e-05
Arg. of Perihelion (ω)332.87221039° ± 3.69e-05
Mean Anomaly (M)237.72335772° ± 2.43e-05
Mean Motion (n)0.2774177215°/day ± 2.06e-09
Perihelion dist (q)1.15918104 AU ± 1.66e-07
Aphelion dist (Q)3.49755956 AU ± 1.67e-07
Orbital Period3.55285985 yr ± 2.64e-08
Physical Parameters
H (abs. magnitude)18.25
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.495″
Uncertainty0
Orbit TypeAmor
MOID0.167506 AU
Observations Used175
Oppositions18
Arc Total1998-2023
First Observation Used1998-09-18
Last Observation Used2023-12-31
Observations (186)
Date Type RA Dec Mag Band Observatory
2016-11-07 10:42:25 C 07 38 33.34 +36 40 15.0 U H21
2016-11-07 10:56:26 C 07 38 33.43 +36 40 18.2 U H21
2016-12-09 11:33:50 C 07 13 56.41 +40 40 18.2 q G96
2016-12-09 11:40:09 C 07 13 56.03 +40 40 19.7 q G96
2016-12-09 11:46:31 C 07 13 55.63 +40 40 21.1 q G96
2016-12-09 11:52:51 C 07 13 55.26 +40 40 22.1 q G96
2019-04-26 06:55:10 C 14 01 55.66 -20 55 24.3 V G96
2019-04-26 07:02:33 C 14 01 55.25 -20 55 22.7 V G96
2019-04-26 07:17:18 C 14 01 54.37 -20 55 20.9 V G96
2019-05-02 08:23:29 C 13 53 34.543 -20 37 55.23 U F51
2019-05-02 08:39:36 C 13 53 33.582 -20 37 53.15 U F51
2019-05-02 08:55:45 C 13 53 32.649 -20 37 50.97 U F51
2019-05-02 09:11:55 C 13 53 31.691 -20 37 48.85 U F51
2019-05-24 07:28:05 C 13 26 17.078 -19 10 40.43 U F52
2019-05-24 07:42:49 C 13 26 16.432 -19 10 37.84 U F52
2019-05-24 07:57:30 C 13 26 15.789 -19 10 35.45 U F52
2019-05-31 07:27:29 C 13 20 03.157 -18 43 53.32 U F51
2019-05-31 07:44:46 C 13 20 02.566 -18 43 50.71 U F51
2019-05-31 08:02:05 C 13 20 01.986 -18 43 48.15 U F51
2019-05-31 08:19:23 C 13 20 01.407 -18 43 45.33 U F51
2023-08-24 14:10:16 C 04 32 47.596 +23 48 44.94 X F52
2023-08-24 14:16:39 C 04 32 48.308 +23 48 49.98 X F52
2023-08-24 14:23:04 C 04 32 49.019 +23 48 55.05 X F52
2023-09-17 06:50:36 S 05 29 26.48 +30 15 13.6 L C51
2023-09-17 11:29:30 S 05 29 49.79 +30 17 57.9 L C51
2023-09-17 13:03:34 S 05 29 57.58 +30 18 54.9 L C51
2023-09-17 16:10:03 S 05 30 13.02 +30 20 43.9 L C51
2023-09-18 07:42:28 S 05 31 29.99 +30 29 57.3 L C51
2023-09-22 11:15:16 C 05 39 19.987 +31 27 43.60 V G96
2023-09-22 11:23:31 C 05 39 20.574 +31 27 48.06 V G96
2023-09-22 11:31:44 C 05 39 21.172 +31 27 52.99 V G96
2023-09-22 11:39:57 C 05 39 21.748 +31 27 57.67 V G96
2023-12-31 06:50:08 C 04 39 26.024 +41 12 06.70 V G96
2023-12-31 06:57:44 C 04 39 25.816 +41 12 04.79 V G96
2023-12-31 07:05:22 C 04 39 25.484 +41 12 01.91 V G96
2023-12-31 07:12:57 C 04 39 25.196 +41 11 58.92 V G96