18882 (1999 YN4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2321218724 ± 9.10e-09
Semi-major axis (a)1.6850068777 AU ± 1.15e-09
Inclination (i)36.81465272° ± 5.29e-07
Long. of Asc. Node (Ω)291.66685521° ± 7.61e-07
Arg. of Perihelion (ω)242.66795075° ± 2.19e-06
Mean Anomaly (M)230.13214226° ± 2.27e-06
Mean Motion (n)0.4506192696°/day ± 4.60e-10
Perihelion dist (q)1.29387993 AU ± 1.54e-08
Aphelion dist (Q)2.07613383 AU ± 1.54e-08
Orbital Period2.18727061 yr ± 2.23e-09
Physical Parameters
H (abs. magnitude)16.14
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.067″
Uncertainty0
Orbit TypeAmor
MOID0.430698 AU
Observations Used2638
Gaia Obs Used122
Oppositions34
Arc Total1954-2025
First Observation Used1954-01-04
Last Observation Used2025-12-18
Observations (4085)
Date Type RA Dec Mag Band Observatory
2022-01-04 05:03:53 S 07 17 07.966 +38 53 50.53 V C57
2022-01-04 05:03:53 s 1 +107413.84 0 +343265.88 3360.0 C57
2022-01-04 05:13:53 S 07 17 06.269 +38 53 31.92 V C57
2022-01-04 05:13:53 s 1 +107104.05 4 +343577.23 8360.0 C57
2022-01-04 05:23:53 S 07 17 04.668 +38 53 12.19 V C57
2022-01-04 05:23:53 s 1 +106793.93 0 +343887.55 2190.0 C57
2022-01-04 05:33:53 S 07 17 03.000 +38 52 53.58 V C57
2022-01-04 05:33:53 s 1 +106483.47 8 +344196.85 4890.0 C57
2022-01-04 05:43:53 S 07 17 01.363 +38 52 34.43 V C57
2022-01-04 05:43:53 s 1 +106172.68 7 +344505.11 6420.0 C57
2022-01-04 05:53:53 S 07 16 59.698 +38 52 15.02 V C57
2022-01-04 05:53:53 s 1 +105861.56 3 +344812.33 6800.0 C57
2022-01-04 06:03:53 S 07 16 58.128 +38 51 55.40 V C57
2022-01-04 06:03:53 s 1 +105550.11 5 +345118.55 6060.0 C57
2022-01-04 06:13:53 S 07 16 56.455 +38 51 37.30 V C57
2022-01-04 06:13:53 s 1 +105238.33 3 +345423.72 4170.0 C57
2022-01-04 06:23:53 S 07 16 54.842 +38 51 17.32 V C57
2022-01-04 06:23:53 s 1 +104926.22 2 +345727.85 1150.0 C57
2022-01-04 06:33:53 S 07 16 53.213 +38 50 58.74 V C57
2022-01-04 06:33:53 s 1 +104613.79 0 +346030.98 7030.0 C57
2022-01-04 06:43:53 S 07 16 51.506 +38 50 40.34 V C57
2022-01-04 06:43:53 s 1 +104301.02 9 +346333.07 1770.0 C57
2022-01-04 06:53:53 S 07 16 49.817 +38 50 19.79 V C57
2022-01-04 06:53:53 s 1 +103987.94 4 +346634.13 5400.0 C57
2022-01-04 07:03:53 S 07 16 48.206 +38 50 00.64 V C57
2022-01-04 07:03:53 s 1 +103674.54 2 +346934.19 7950.0 C57
2022-01-04 07:13:53 S 07 16 46.690 +38 49 41.88 V C57
2022-01-04 07:13:53 s 1 +103360.81 5 +347233.20 9380.0 C57
2022-01-04 07:23:53 S 07 16 44.959 +38 49 23.20 V C57
2022-01-04 07:23:53 s 1 +103046.76 7 +347531.19 9720.0 C57
2022-01-04 07:33:53 S 07 16 43.351 +38 49 05.30 V C57
2022-01-04 07:33:53 s 1 +102732.40 7 +347828.17 8990.0 C57
2022-01-04 07:43:53 S 07 16 41.794 +38 48 45.29 V C57
2022-01-04 07:43:53 s 1 +102417.72 6 +348124.12 7160.0 C57
2022-01-04 07:53:53 S 07 16 40.046 +38 48 25.92 V C57
2022-01-04 07:53:53 s 1 +102102.72 9 +348419.04 4260.0 C57
2022-01-04 08:03:53 S 07 16 38.422 +38 48 05.98 V C57
2022-01-04 08:03:53 s 1 +101787.42 4 +348712.95 310.0 C57
2022-01-04 08:13:53 S 07 16 36.787 +38 47 47.40 V C57
2022-01-04 08:13:53 s 1 +101471.80 1 +349005.84 5270.0 C57
2022-01-04 08:23:53 S 07 16 35.184 +38 47 28.54 V C57
2022-01-04 08:23:53 s 1 +101155.86 7 +349297.69 9180.0 C57
2022-01-04 09:33:53 S 07 16 23.674 +38 45 13.46 V C57
2022-01-04 09:33:53 s 1 +98935.748 0 +351312.27 7470.0 C57
2022-01-04 09:43:53 S 07 16 21.996 +38 44 54.71 V C57
2022-01-04 09:43:53 s 1 +98617.374 0 +351596.00 3130.0 C57
2022-01-04 09:53:53 S 07 16 20.455 +38 44 35.99 V C57
2022-01-04 09:53:53 s 1 +98298.701 0 +351878.71 7780.0 C57
2022-01-04 10:03:53 S 07 16 18.643 +38 44 17.34 V C57
2022-01-04 10:03:53 s 1 +97979.735 0 +352160.42 1450.0 C57