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
2022-01-05 15:43:53 S 07 11 24.710 +37 45 24.19 V C57
2022-01-05 15:43:53 s 1 +37588.963 0 +386660.02 5160.0 C57
2022-01-05 15:53:53 S 07 11 23.100 +37 45 03.82 V C57
2022-01-05 15:53:53 s 1 +37235.112 0 +386768.24 8700.0 C57
2022-01-05 16:03:53 S 07 11 21.394 +37 44 43.80 V C57
2022-01-05 16:03:53 s 1 +36881.158 0 +386875.54 2070.0 C57
2022-01-05 16:13:53 S 07 11 19.819 +37 44 23.71 V C57
2022-01-05 16:13:53 s 1 +36527.100 0 +386981.89 5270.0 C57
2022-01-05 16:23:53 S 07 11 18.146 +37 44 02.58 V C57
2022-01-05 16:23:53 s 1 +36172.939 0 +387087.30 8310.0 C57
2022-01-05 16:33:53 S 07 11 16.416 +37 43 42.20 V C57
2022-01-05 16:33:53 s 1 +35818.679 0 +387191.80 1210.0 C57
2022-01-05 16:43:53 S 07 11 14.767 +37 43 21.86 V C57
2022-01-05 16:43:53 s 1 +35464.316 0 +387295.34 3950.0 C57
2022-01-05 16:53:53 S 07 11 13.128 +37 43 01.70 V C57
2022-01-05 16:53:53 s 1 +35109.854 0 +387397.95 6540.0 C57
2022-01-05 17:03:53 S 07 11 11.410 +37 42 40.50 V C57
2022-01-05 17:03:53 s 1 +34755.295 0 +387499.64 8990.0 C57
2022-01-05 17:13:53 S 07 11 09.838 +37 42 20.59 V C57
2022-01-05 17:13:53 s 1 +34400.636 0 +387600.38 1300.0 C57
2022-01-05 17:23:53 S 07 11 08.107 +37 41 59.89 V C57
2022-01-05 17:23:53 s 1 +34045.880 0 +387700.18 3480.0 C57
2022-01-05 17:33:53 S 07 11 06.521 +37 41 39.19 V C57
2022-01-05 17:33:53 s 1 +33691.030 0 +387799.07 5520.0 C57
2022-01-05 17:43:53 S 07 11 04.843 +37 41 19.39 V C57
2022-01-05 17:43:53 s 1 +33336.084 0 +387897.01 7440.0 C57
2022-01-05 17:53:53 S 07 11 03.175 +37 40 58.48 V C57
2022-01-05 17:53:53 s 1 +32981.042 0 +387994.01 9230.0 C57
2022-01-05 18:03:53 S 07 11 01.582 +37 40 37.99 V C57
2022-01-05 18:03:53 s 1 +32625.910 0 +388090.09 910.0 C57
2022-01-05 18:13:53 S 07 10 59.904 +37 40 17.51 V C57
2022-01-05 18:13:53 s 1 +32270.683 0 +388185.23 2470.0 C57
2022-01-05 18:23:53 S 07 10 58.109 +37 39 57.10 V C57
2022-01-05 18:23:53 s 1 +31915.365 0 +388279.44 3920.0 C57
2022-01-05 18:33:53 S 07 10 56.455 +37 39 35.28 V C57
2022-01-05 18:33:53 s 1 +31559.958 0 +388372.72 5260.0 C57
2022-01-05 18:43:53 S 07 10 54.912 +37 39 16.38 V C57
2022-01-05 18:43:53 s 1 +31204.460 0 +388465.07 6500.0 C57
2022-01-05 18:53:53 S 07 10 53.189 +37 38 55.75 V C57
2022-01-05 18:53:53 s 1 +30848.872 0 +388556.47 7630.0 C57
2022-01-05 19:13:53 S 07 10 49.771 +37 38 13.06 V C57
2022-01-05 19:13:53 s 1 +30137.436 0 +388736.51 370.0 C57
2022-01-05 19:23:53 S 07 10 48.154 +37 37 52.57 V C57
2022-01-05 19:23:53 s 1 +29781.588 0 +388825.12 9510.0 C57
2022-01-05 19:33:53 S 07 10 46.618 +37 37 33.96 V C57
2022-01-05 19:33:53 s 1 +29425.656 0 +388912.82 8730.0 C57
2022-01-05 19:43:53 S 07 10 44.892 +37 37 11.03 V C57
2022-01-05 19:43:53 s 1 +29069.638 0 +388999.58 8030.0 C57
2022-01-05 19:53:53 S 07 10 43.224 +37 36 51.05 V C57
2022-01-05 19:53:53 s 1 +28713.537 0 +389085.39 7410.0 C57