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
2022-01-03 07:33:53 S 07 20 37.430 +39 33 45.72 V C57
2022-01-03 07:33:53 s 1 +143966.24 3 +294163.61 8300.0 C57
2022-01-03 07:43:53 S 07 20 35.830 +39 33 26.68 V C57
2022-01-03 07:43:53 s 1 +143713.94 7 +294614.88 3140.0 C57
2022-01-03 07:53:53 S 07 20 34.157 +39 33 08.93 V C57
2022-01-03 07:53:53 s 1 +143461.07 8 +295065.00 5820.0 C57
2022-01-03 08:03:53 S 07 20 32.587 +39 32 51.40 V C57
2022-01-03 08:03:53 s 1 +143207.63 9 +295513.98 6340.0 C57
2022-01-03 08:23:53 S 07 20 29.525 +39 32 14.86 V C57
2022-01-03 08:23:53 s 1 +142699.05 9 +296408.51 980.0 C57
2022-01-03 08:33:53 S 07 20 27.744 +39 31 57.25 V C57
2022-01-03 08:33:53 s 1 +142443.92 3 +296854.06 5100.0 C57
2022-01-03 08:43:53 S 07 20 26.143 +39 31 39.47 V C57
2022-01-03 08:43:53 s 1 +142188.22 6 +297298.48 7120.0 C57
2022-01-03 08:53:53 S 07 20 24.562 +39 31 21.00 V C57
2022-01-03 08:53:53 s 1 +141931.97 0 +297741.76 7030.0 C57
2022-01-03 09:03:53 S 07 20 23.016 +39 31 03.11 V C57
2022-01-03 09:03:53 s 1 +141675.15 8 +298183.90 4850.0 C57
2022-01-03 09:23:53 S 07 20 19.718 +39 30 25.16 V C57
2022-01-03 09:23:53 s 1 +141159.87 4 +299064.77 4240.0 C57
2022-01-03 09:33:53 S 07 20 18.041 +39 30 07.49 V C57
2022-01-03 09:33:53 s 1 +140901.40 6 +299503.50 5830.0 C57
2022-01-03 09:43:53 S 07 20 16.498 +39 29 49.42 V C57
2022-01-03 09:43:53 s 1 +140642.39 1 +299941.11 5370.0 C57
2022-01-03 09:53:53 S 07 20 14.892 +39 29 31.52 V C57
2022-01-03 09:53:53 s 1 +140382.83 1 +300377.58 2860.0 C57
2022-01-03 10:23:53 S 07 20 10.013 +39 28 37.34 V C57
2022-01-03 10:23:53 s 1 +139600.90 1 +301680.21 3160.0 C57
2022-01-03 10:33:53 S 07 20 08.345 +39 28 18.34 V C57
2022-01-03 10:33:53 s 1 +139339.18 3 +302112.16 2560.0 C57
2022-01-03 10:43:53 S 07 20 06.835 +39 28 00.19 V C57
2022-01-03 10:43:53 s 1 +139076.93 0 +302542.98 9960.0 C57
2022-01-03 10:53:53 S 07 20 05.201 +39 27 42.34 V C57
2022-01-03 10:53:53 s 1 +138814.14 5 +302972.68 5370.0 C57
2022-01-03 11:03:53 S 07 20 03.578 +39 27 22.57 V C57
2022-01-03 11:03:53 s 1 +138550.83 1 +303401.26 8800.0 C57
2022-01-03 11:13:53 S 07 20 01.925 +39 27 04.75 V C57
2022-01-03 11:13:53 s 1 +138286.98 9 +303828.71 250.0 C57
2022-01-03 11:23:53 S 07 20 00.346 +39 26 47.11 V C57
2022-01-03 11:23:53 s 1 +138022.62 2 +304255.04 9750.0 C57
2022-01-03 11:33:53 S 07 19 58.685 +39 26 28.86 V C57
2022-01-03 11:33:53 s 1 +137757.73 1 +304680.25 7280.0 C57
2022-01-03 11:43:53 S 07 19 57.151 +39 26 10.39 V C57
2022-01-03 11:43:53 s 1 +137492.31 9 +305104.33 2880.0 C57
2022-01-03 11:53:53 S 07 19 55.450 +39 25 52.90 V C57
2022-01-03 11:53:53 s 1 +137226.38 8 +305527.30 6530.0 C57
2022-01-03 12:03:53 S 07 19 53.957 +39 25 34.39 V C57
2022-01-03 12:03:53 s 1 +136959.94 0 +305949.15 8260.0 C57
2022-01-03 12:13:53 S 07 19 52.313 +39 25 16.43 V C57
2022-01-03 12:13:53 s 1 +136692.97 8 +306369.88 8080.0 C57