IAA RAS IAA Minor Planet Database

85839 (1998 YO4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2481006912 ± 1.24e-08
Semi-major axis (a)1.6534926704 AU ± 9.96e-10
Inclination (i)9.31939239° ± 8.81e-07
Long. of Asc. Node (Ω)28.50072273° ± 2.80e-06
Arg. of Perihelion (ω)199.69071851° ± 2.99e-06
Mean Anomaly (M)97.04138343° ± 2.26e-06
Mean Motion (n)0.4635631070°/day ± 4.19e-10
Perihelion dist (q)1.24326000 AU ± 2.05e-08
Aphelion dist (Q)2.06372534 AU ± 2.05e-08
Orbital Period2.12619656 yr ± 1.92e-09
Physical Parameters
H (abs. magnitude)16.58
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.072″
Uncertainty0
Orbit TypeAmor
MOID0.239954 AU
Observations Used2510
Gaia Obs Used50
Oppositions12
Arc Total1993-2025
First Observation Used1993-04-25
Last Observation Used2025-11-08
Observations (3041)
Date Type RA Dec Mag Band Observatory
2019-10-06 14:33:41 C 02 04 30.38 +10 43 26.3 – V T08
2019-10-06 14:37:28 C 02 04 30.14 +10 43 26.1 – V T05
2019-10-06 14:42:30 C 02 04 29.87 +10 43 25.2 – V T08
2019-10-06 14:46:29 C 02 04 29.60 +10 43 23.8 – V T05
2019-10-06 14:51:30 C 02 04 29.28 +10 43 24.3 – V T08
2019-10-06 14:55:24 C 02 04 29.07 +10 43 23.9 – V T05
2019-10-06 15:00:14 C 02 04 28.76 +10 43 24.4 – V T08
2019-10-06 15:05:07 C 02 04 28.47 +10 43 23.1 – V T05
2019-10-06 15:09:04 C 02 04 28.25 +10 43 22.7 – V T08
2019-10-06 15:14:00 C 02 04 27.91 +10 43 22.0 – V T05
2019-10-06 15:16:31 C 02 04 27.79 +10 43 22.2 – V T08
2019-10-07 07:45:44 C 02 03 29.26 +10 42 04.0 – U I41
2019-10-07 08:39:15 C 02 03 25.92 +10 41 59.9 – U I41
2019-10-08 01:12:50 C 02 02 25.79 +10 40 38.0 – q 160
2019-10-08 01:15:50 C 02 02 25.57 +10 40 36.9 – q 160
2019-10-08 01:18:51 C 02 02 25.43 +10 40 37.6 – q 160
2019-10-08 07:17:17 C 02 02 03.74 +10 40 08.4 – V 703
2019-10-08 07:55:56 C 02 02 01.32 +10 40 05.3 – V 703
2019-10-08 08:03:37 C 02 02 00.86 +10 40 04.9 – V 703
2019-10-08 08:11:18 C 02 02 00.41 +10 40 04.8 – V 703
2019-10-08 10:07:57 C 02 01 53.39 +10 39 56.2 – V T08
2019-10-08 10:12:36 C 02 01 53.10 +10 39 56.4 – V T08
2019-10-08 10:20:33 C 02 01 52.62 +10 39 55.5 – V T08
2019-10-08 10:35:59 C 02 01 51.63 +10 39 54.3 – V T08
2019-10-08 23:08:54 C 02 01 05.38 +10 38 47.2 – q 160
2019-10-08 23:11:52 C 02 01 05.20 +10 38 46.8 – q 160
2019-10-08 23:14:48 C 02 01 05.00 +10 38 46.4 – q 160
2019-10-11 00:09:07 C 01 58 01.62 +10 34 22.4 – q 160
2019-10-11 00:12:03 C 01 58 01.43 +10 34 21.5 – q 160
2019-10-11 00:15:00 C 01 58 01.24 +10 34 21.1 – q 160
2019-10-11 23:07:35 C 01 56 34.12 +10 32 08.9 – q 160
2019-10-11 23:10:38 C 01 56 33.88 +10 32 09.3 – q 160
2019-10-11 23:13:35 C 01 56 33.73 +10 32 09.5 – q 160
2019-10-17 11:11:44 C 01 47 57.24 +10 18 20.2 – V T08
2019-10-17 11:22:31 C 01 47 56.45 +10 18 17.4 – V T08
2019-10-17 11:36:57 C 01 47 55.43 +10 18 16.3 – V T08
2019-10-17 11:47:08 C 01 47 54.77 +10 18 15.0 – V T08
2019-10-18 10:36:21 C 01 46 24.33 +10 15 39.8 – V T05
2019-10-18 10:40:59 C 01 46 24.06 +10 15 40.3 – V T05
2019-10-18 10:50:26 C 01 46 23.39 +10 15 38.6 – V T05
2019-10-18 11:07:41 C 01 46 22.25 +10 15 37.3 – V T05
2019-10-19 07:26:15 C 01 45 01.65 +10 13 16.1 – U I41
2019-10-19 07:28:12 C 01 45 01.51 +10 13 15.9 – U I41
2019-10-19 08:04:04 C 01 44 59.12 +10 13 12.1 – V 703
2019-10-19 08:11:46 C 01 44 58.55 +10 13 10.6 – V 703
2019-10-19 08:19:28 C 01 44 58.02 +10 13 10.1 – V 703
2019-10-19 08:27:10 C 01 44 57.43 +10 13 09.9 – V 703
2019-10-19 10:13:28 C 01 44 50.57 +10 12 58.6 – V T05
2019-10-19 10:19:05 C 01 44 50.19 +10 12 58.1 – V T05
2019-10-19 10:30:49 C 01 44 49.40 +10 12 56.4 – V T05