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 05:23:53 s 1 -93126.547 0 +363660.36 4480.0 C57
2022-01-08 05:33:53 S 07 01 09.701 +35 31 42.10 V C57
2022-01-08 05:33:53 s 1 -93458.778 0 +363425.91 4990.0 C57
2022-01-08 05:43:53 S 07 01 08.009 +35 31 20.78 V C57
2022-01-08 05:43:53 s 1 -93790.774 0 +363190.51 4150.0 C57
2022-01-08 05:53:53 S 07 01 06.410 +35 30 56.77 V C57
2022-01-08 05:53:53 s 1 -94122.534 0 +362954.16 1960.0 C57
2022-01-08 06:03:53 S 07 01 04.757 +35 30 34.56 V C57
2022-01-08 06:03:53 s 1 -94454.057 0 +362716.86 8400.0 C57
2022-01-08 06:13:53 S 07 01 03.146 +35 30 11.99 V C57
2022-01-08 06:13:53 s 1 -94785.342 0 +362478.60 3480.0 C57
2022-01-08 06:23:53 S 07 01 01.534 +35 29 48.84 V C57
2022-01-08 06:23:53 s 1 -95116.388 0 +362239.39 7180.0 C57
2022-01-08 06:33:53 S 07 00 59.885 +35 29 26.23 V C57
2022-01-08 06:33:53 s 1 -95447.193 0 +361999.22 9500.0 C57
2022-01-08 06:43:53 S 07 00 58.219 +35 29 03.23 V C57
2022-01-08 06:43:53 s 1 -95777.757 0 +361758.10 450.0 C57
2022-01-08 06:53:53 S 07 00 56.568 +35 28 40.87 V C57
2022-01-08 06:53:53 s 1 -96108.078 0 +361516.03 0.0 C57
2022-01-08 07:03:53 S 07 00 54.929 +35 28 17.47 V C57
2022-01-08 07:03:53 s 1 -96438.155 0 +361273.00 8160.0 C57
2022-01-08 07:13:53 S 07 00 53.232 +35 27 54.86 V C57
2022-01-08 07:13:53 s 1 -96767.987 0 +361029.02 4930.0 C57
2022-01-08 07:23:53 S 07 00 51.586 +35 27 31.86 V C57
2022-01-08 07:23:53 s 1 -97097.572 0 +360784.08 290.0 C57
2022-01-08 07:33:53 S 07 00 50.042 +35 27 10.15 V C57
2022-01-08 07:33:53 s 1 -97426.911 0 +360538.19 4240.0 C57
2022-01-08 07:43:53 S 07 00 48.360 +35 26 46.32 V C57
2022-01-08 07:43:53 s 1 -97756.000 0 +360291.34 6770.0 C57
2022-01-08 07:53:53 S 07 00 46.742 +35 26 23.24 V C57
2022-01-08 07:53:53 s 1 -98084.841 0 +360043.53 7890.0 C57
2022-01-08 08:03:53 S 07 00 44.981 +35 26 00.53 V C57
2022-01-08 08:03:53 s 1 -98413.430 0 +359794.77 7580.0 C57
2022-01-08 08:13:53 S 07 00 43.382 +35 25 38.78 V C57
2022-01-08 08:13:53 s 1 -98741.767 0 +359545.05 5840.0 C57
2022-01-08 08:23:53 S 07 00 41.753 +35 25 15.85 V C57
2022-01-08 08:23:53 s 1 -99069.851 0 +359294.37 2670.0 C57
2022-01-08 08:33:53 S 07 00 40.044 +35 24 52.81 V C57
2022-01-08 08:33:53 s 1 -99397.681 0 +359042.74 8060.0 C57
2022-01-08 08:43:53 S 07 00 38.402 +35 24 29.95 V C57
2022-01-08 08:43:53 s 1 -99725.255 0 +358790.14 2000.0 C57
2022-01-08 08:53:53 S 07 00 36.749 +35 24 05.62 V C57
2022-01-08 08:53:53 s 1 -100052.57 2 +358536.59 4490.0 C57
2022-01-08 09:03:53 S 07 00 35.100 +35 23 44.59 V C57
2022-01-08 09:03:53 s 1 -100379.63 2 +358282.08 5520.0 C57
2022-01-08 09:13:53 S 07 00 33.540 +35 23 21.37 V C57
2022-01-08 09:13:53 s 1 -100706.43 2 +358026.61 5090.0 C57
2022-01-08 09:23:53 S 07 00 31.790 +35 22 58.40 V C57
2022-01-08 09:23:53 s 1 -101032.97 3 +357770.18 3190.0 C57
2022-01-08 09:33:53 S 07 00 30.233 +35 22 34.54 V C57