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
2008-08-02 11:51:12 C 19 13 30.64 -49 58 15.9 r E12
2008-08-10 01:17:30 C 19 13 21.46 -47 46 57.9 r 808
2008-08-10 01:27:59 C 19 13 21.48 -47 46 50.7 r 808
2008-08-10 01:38:29 C 19 13 21.48 -47 46 42.8 r 808
2008-08-12 01:41:00 C 19 13 51.50 -47 10 44.7 r 808
2008-08-12 01:50:59 C 19 13 51.52 -47 10 37.1 r 808
2008-08-12 02:01:00 C 19 13 51.54 -47 10 30.0 r 808
2008-08-13 02:11:30 C 19 14 11.39 -46 52 17.4 r 808
2008-08-13 02:21:29 C 19 14 11.46 -46 52 09.8 r 808
2008-08-19 12:07:19 C 19 17 26.34 -44 55 33.5 r E12
2008-08-19 12:20:05 C 19 17 26.62 -44 55 23.8 r E12
2008-08-19 12:32:54 C 19 17 26.88 -44 55 13.9 r E12
2008-08-19 12:45:41 C 19 17 27.16 -44 55 03.9 r E12
2008-08-26 09:44:20 C 19 22 52.14 -42 50 21.6 r E12
2008-08-26 09:55:46 C 19 22 52.53 -42 50 13.2 r E12
2008-08-26 10:07:11 C 19 22 52.89 -42 50 04.8 r E12
2008-09-20 09:48:55 C 19 54 09.25 -35 40 06.8 r E12
2008-09-20 10:00:01 C 19 54 09.90 -35 39 59.5 r E12
2008-09-20 10:11:00 C 19 54 10.51 -35 39 51.0 r E12
2008-09-20 10:21:53 C 19 54 11.19 -35 39 44.5 r E12
2008-10-01 09:56:50 C 20 11 27.27 -32 44 06.3 r E12
2008-10-01 10:14:00 C 20 11 28.46 -32 43 55.8 r E12
2008-10-01 10:47:51 C 20 11 30.62 -32 43 33.0 r E12
2009-11-17 02:52:45 C 09 54 52.50 +24 48 27.4 r B67
2009-11-17 03:03:04 C 09 54 53.39 +24 48 26.2 r B67
2009-11-17 03:13:18 C 09 54 54.12 +24 48 24.9 r B67
2009-11-27 11:34:28 C 10 14 18.34 +24 16 43.4 r 703
2009-11-27 11:45:11 C 10 14 19.21 +24 16 41.4 r 703
2009-11-27 11:55:52 C 10 14 20.00 +24 16 40.4 r 703
2009-11-27 12:06:36 C 10 14 20.76 +24 16 39.2 r 703
2009-12-11 10:33:40 C 10 38 33.50 +23 48 50.0 19.4 c 704
2009-12-11 10:52:20 C 10 38 34.74 +23 48 48.5 19.8 c 704
2009-12-11 11:11:00 C 10 38 36.02 +23 48 47.2 19.9 c 704
2009-12-11 11:29:37 C 10 38 37.25 +23 48 47.1 20.0 c 704
2009-12-11 11:48:14 C 10 38 38.45 +23 48 46.3 19.7 c 704
2009-12-18 10:53:36 C 10 49 39.93 +23 44 12.0 r 703
2009-12-18 11:00:16 C 10 49 40.26 +23 44 12.3 r 703
2009-12-18 11:07:02 C 10 49 40.76 +23 44 12.7 r 703
2009-12-18 11:13:42 C 10 49 41.23 +23 44 12.6 r 703
2010-01-07 09:16:13 C 11 15 36.85 +24 18 29.8 18.2 c 704
2010-01-07 09:52:43 C 11 15 38.31 +24 18 35.7 18.7 c 704
2010-01-07 10:29:19 C 11 15 39.87 +24 18 40.9 18.8 c 704
2010-01-20 03:56:07 C 11 25 58.12 +25 25 09.2 r J75
2010-01-20 04:14:39 C 11 25 58.53 +25 25 13.6 r J75
2010-01-20 04:33:14 C 11 25 58.89 +25 25 19.0 r J75
2010-01-22 02:47:23 C 11 26 58.29 +25 38 28.5 u 160
2010-01-22 02:50:24 C 11 26 58.33 +25 38 29.1 u 160
2010-01-22 02:53:27 C 11 26 58.40 +25 38 29.8 u 160
2010-02-06 08:11:56 C 11 28 15.86 +27 43 48.7 17.0 c 704
2010-02-06 08:30:08 C 11 28 15.51 +27 43 55.4 17.4 c 704