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
2022-01-08 14:23:53 s 1 -110702.14 3 +349629.18 6550.0 C57
2022-01-08 14:33:53 S 06 59 41.064 +35 11 05.89 V C57
2022-01-08 14:33:53 s 1 -111020.01 0 +349342.81 6410.0 C57
2022-01-08 14:43:53 S 06 59 39.365 +35 10 41.63 V C57
2022-01-08 14:43:53 s 1 -111337.57 7 +349055.47 4620.0 C57
2022-01-08 14:53:53 S 06 59 37.788 +35 10 19.49 V C57
2022-01-08 14:53:53 s 1 -111654.84 3 +348767.16 1180.0 C57
2022-01-08 15:03:53 S 06 59 36.091 +35 09 56.66 V C57
2022-01-08 15:03:53 s 1 -111971.80 6 +348477.87 6080.0 C57
2022-01-08 15:13:53 S 06 59 34.397 +35 09 33.52 V C57
2022-01-08 15:13:53 s 1 -112288.46 5 +348187.61 9320.0 C57
2022-01-08 15:23:53 S 06 59 32.794 +35 09 10.87 V C57
2022-01-08 15:23:53 s 1 -112604.82 0 +347896.38 880.0 C57
2022-01-08 15:33:53 S 06 59 31.169 +35 08 47.76 V C57
2022-01-08 15:33:53 s 1 -112920.86 8 +347604.17 770.0 C57
2022-01-08 15:43:53 S 06 59 29.474 +35 08 24.47 V C57
2022-01-08 15:43:53 s 1 -113236.60 9 +347310.99 8970.0 C57
2022-01-08 15:53:53 S 06 59 27.878 +35 08 01.18 V C57
2022-01-08 15:53:53 s 1 -113552.04 0 +347016.83 5490.0 C57
2022-01-08 16:03:53 S 06 59 26.244 +35 07 38.39 V C57
2022-01-08 16:03:53 s 1 -113867.16 1 +346721.69 310.0 C57
2022-01-08 16:13:53 S 06 59 24.523 +35 07 14.56 V C57
2022-01-08 16:13:53 s 1 -114181.97 1 +346425.58 3430.0 C57
2022-01-08 16:23:53 S 06 59 22.944 +35 06 52.02 V C57
2022-01-08 16:23:53 s 1 -114496.46 8 +346128.50 4840.0 C57
2022-01-08 16:33:53 S 06 59 21.317 +35 06 29.52 V C57
2022-01-08 16:33:53 s 1 -114810.65 0 +345830.43 4540.0 C57
2022-01-08 16:43:53 S 06 59 19.690 +35 06 05.58 V C57
2022-01-08 16:43:53 s 1 -115124.51 7 +345531.39 2530.0 C57
2022-01-08 16:53:53 S 06 59 18.050 +35 05 40.99 V C57
2022-01-08 16:53:53 s 1 -115438.06 7 +345231.37 8780.0 C57
2022-01-08 17:03:53 S 06 59 16.402 +35 05 23.17 V C57
2022-01-08 17:03:53 s 1 -115751.29 9 +344930.38 3310.0 C57
2022-01-08 17:23:53 S 06 59 13.594 +35 04 31.84 V C57
2022-01-08 17:23:53 s 1 -116376.80 2 +344325.45 7150.0 C57
2022-01-08 17:33:53 S 06 59 11.578 +35 04 09.73 V C57
2022-01-08 17:33:53 s 1 -116689.07 1 +344021.51 6440.0 C57
2022-01-08 17:43:53 S 06 59 09.893 +35 03 47.59 V C57
2022-01-08 17:43:53 s 1 -117001.01 6 +343716.60 3990.0 C57
2022-01-08 17:53:53 S 06 59 08.285 +35 03 23.80 V C57
2022-01-08 17:53:53 s 1 -117312.63 7 +343410.70 9770.0 C57
2022-01-08 18:03:53 S 06 59 06.653 +35 03 00.43 V C57
2022-01-08 18:03:53 s 1 -117623.93 1 +343103.82 3780.0 C57
2022-01-08 18:13:53 S 06 59 05.071 +35 02 38.00 V C57
2022-01-08 18:13:53 s 1 -117934.89 7 +342795.97 6020.0 C57
2022-01-08 18:20:00 B 06 59 09.54 +34 55 16.3 V O47
2022-01-08 18:23:53 S 06 59 03.396 +35 02 13.49 V C57
2022-01-08 18:23:53 s 1 -118245.53 4 +342487.13 6480.0 C57
2022-01-08 18:33:53 S 06 59 01.798 +35 01 51.24 V C57
2022-01-08 18:33:53 s 1 -118555.84 1 +342177.30 5150.0 C57