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
2021-10-03 05:43:57 s 1 +126931.60 0 +302228.41 7440.0 – C57
2021-10-03 06:13:57 S 00 27 07.558 -04 44 27.38 – V C57
2021-10-03 06:13:57 s 1 +126033.52 9 +303413.57 1610.0 – C57
2021-10-03 06:53:57 S 00 27 04.529 -04 44 30.12 – V C57
2021-10-03 06:53:57 s 1 +124829.24 9 +304976.82 5380.0 – C57
2021-10-03 07:23:57 S 00 27 02.707 -04 44 32.78 – V C57
2021-10-03 07:23:57 s 1 +123920.97 9 +306136.56 7120.0 – C57
2021-10-03 07:33:57 S 00 27 02.117 -04 44 34.51 – V C57
2021-10-03 07:33:57 s 1 +123617.27 1 +306520.73 4670.0 – C57
2021-10-03 07:43:57 S 00 27 01.238 -04 44 33.54 – V C57
2021-10-03 07:43:57 s 1 +123313.09 0 +306903.70 720.0 – C57
2021-10-03 08:13:57 S 00 26 59.273 -04 44 38.54 – V C57
2021-10-03 08:13:57 s 1 +122397.73 4 +308045.38 9930.0 – C57
2021-10-03 08:33:57 S 00 26 57.674 -04 44 38.11 – V C57
2021-10-03 08:33:57 s 1 +121785.17 5 +308800.50 8700.0 – C57
2021-10-03 08:53:57 S 00 26 56.597 -04 44 44.27 – V C57
2021-10-03 08:53:57 s 1 +121170.77 9 +309550.82 1630.0 – C57
2021-10-03 09:03:57 S 00 26 56.124 -04 44 43.33 – V C57
2021-10-03 09:03:57 s 1 +120862.89 7 +309924.19 5920.0 – C57
2021-10-03 09:13:57 S 00 26 54.799 -04 44 42.22 – V C57
2021-10-03 09:13:57 s 1 +120554.56 2 +310296.36 8780.0 – C57
2021-10-03 09:33:57 S 00 26 53.652 -04 44 42.50 – V C57
2021-10-03 09:33:57 s 1 +119936.54 2 +311037.11 200.0 – C57
2021-10-03 09:43:57 S 00 26 52.834 -04 44 41.53 – V C57
2021-10-03 09:43:57 s 1 +119626.86 0 +311405.70 8790.0 – C57
2021-10-03 09:53:57 S 00 26 52.085 -04 44 39.73 – V C57
2021-10-03 09:53:57 s 1 +119316.73 4 +311773.10 5960.0 – C57
2021-10-03 10:03:57 S 00 26 51.794 -04 44 51.47 – V C57
2021-10-03 10:03:57 s 1 +119006.16 6 +312139.30 1720.0 – C57
2021-10-03 10:13:57 S 00 26 50.952 -04 44 47.54 – V C57
2021-10-03 10:13:57 s 1 +118695.15 7 +312504.32 6090.0 – C57
2021-10-03 10:16:04 C 00 27 20.62 -04 45 29.3 – V T05
2021-10-03 10:21:22 C 00 27 20.26 -04 45 29.8 – V T05
2021-10-03 10:23:57 S 00 26 49.990 -04 44 46.57 – V C57
2021-10-03 10:23:57 s 1 +118383.70 9 +312868.15 9070.0 – C57
2021-10-03 10:29:18 C 00 27 19.72 -04 45 30.3 – V T05
2021-10-03 10:33:57 S 00 26 49.687 -04 44 50.75 – V C57
2021-10-03 10:33:57 s 1 +118071.82 6 +313230.78 670.0 – C57
2021-10-03 10:46:00 C 00 27 18.60 -04 45 31.6 – V T05
2021-10-03 11:03:57 S 00 26 47.652 -04 44 54.13 – V C57
2021-10-03 11:03:57 s 1 +117133.57 7 +314311.57 7220.0 – C57
2021-10-03 11:23:57 S 00 26 46.202 -04 44 52.94 – V C57
2021-10-03 11:23:57 s 1 +116505.93 3 +315026.17 8120.0 – C57
2021-10-03 11:33:57 S 00 26 45.451 -04 44 49.81 – V C57
2021-10-03 11:33:57 s 1 +116191.47 3 +315381.70 1550.0 – C57
2021-10-03 11:43:57 S 00 26 44.479 -04 44 55.61 – V C57
2021-10-03 11:43:57 s 1 +115876.59 2 +315736.04 3640.0 – C57
2021-10-03 12:03:57 S 00 26 43.548 -04 44 57.70 – V C57
2021-10-03 12:03:57 s 1 +115245.57 0 +316441.19 3840.0 – C57
2021-10-03 12:13:57 S 00 26 42.658 -04 44 56.04 – V C57