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
2022-01-09 08:13:53 S 06 56 48.156 +34 29 49.70 V C57
2022-01-09 08:13:53 s 1 -142737.09 1 +313381.75 4820.0 C57
2022-01-09 08:23:53 S 06 56 46.694 +34 29 26.48 V C57
2022-01-09 08:23:53 s 1 -143014.75 4 +312988.63 1560.0 C57
2022-01-09 08:33:53 S 06 56 44.942 +34 29 02.69 V C57
2022-01-09 08:33:53 s 1 -143291.95 5 +312594.48 5910.0 C57
2022-01-09 08:43:53 S 06 56 43.418 +34 28 39.36 V C57
2022-01-09 08:43:53 s 1 -143568.69 2 +312199.30 7870.0 C57
2022-01-09 08:53:53 S 06 56 41.750 +34 28 15.10 V C57
2022-01-09 08:53:53 s 1 -143844.96 3 +311803.09 7430.0 C57
2022-01-09 09:03:53 S 06 56 40.169 +34 27 51.73 V C57
2022-01-09 09:03:53 s 1 -144120.76 7 +311405.85 4590.0 C57
2022-01-09 09:13:53 S 06 56 38.542 +34 27 28.80 V C57
2022-01-09 09:13:53 s 1 -144396.10 1 +311007.59 9330.0 C57
2022-01-09 09:23:53 S 06 56 36.943 +34 27 04.61 V C57
2022-01-09 09:23:53 s 1 -144670.96 4 +310608.29 1640.0 C57
2022-01-09 09:33:53 S 06 56 35.330 +34 26 40.92 V C57
2022-01-09 09:33:53 s 1 -144945.35 5 +310207.96 1520.0 C57
2022-01-09 09:43:53 S 06 56 33.679 +34 26 17.09 V C57
2022-01-09 09:43:53 s 1 -145219.27 0 +309806.61 8960.0 C57
2022-01-09 09:53:53 S 06 56 32.050 +34 25 53.36 V C57
2022-01-09 09:53:53 s 1 -145492.70 9 +309404.22 3950.0 C57
2022-01-09 10:03:53 S 06 56 30.502 +34 25 29.82 V C57
2022-01-09 10:03:53 s 1 -145765.66 9 +309000.79 6480.0 C57
2022-01-09 10:13:53 S 06 56 28.846 +34 25 06.42 V C57
2022-01-09 10:13:53 s 1 -146038.14 9 +308596.34 6550.0 C57
2022-01-09 10:23:53 S 06 56 27.202 +34 24 41.90 V C57
2022-01-09 10:23:53 s 1 -146310.14 7 +308190.85 4140.0 C57
2022-01-09 10:33:53 S 06 56 25.738 +34 24 18.47 V C57
2022-01-09 10:33:53 s 1 -146581.66 0 +307784.33 9250.0 C57
2022-01-09 10:43:53 S 06 56 23.969 +34 23 54.28 V C57
2022-01-09 10:43:53 s 1 -146852.68 8 +307376.77 1860.0 C57
2022-01-09 10:53:53 S 06 56 22.356 +34 23 29.40 V C57
2022-01-09 10:53:53 s 1 -147123.22 8 +306968.18 1980.0 C57
2022-01-09 11:03:53 S 06 56 20.758 +34 23 07.73 V C57
2022-01-09 11:03:53 s 1 -147393.27 8 +306558.55 9590.0 C57
2022-01-09 11:13:53 S 06 56 19.171 +34 22 44.18 V C57
2022-01-09 11:13:53 s 1 -147662.83 6 +306147.88 4680.0 C57
2022-01-09 11:23:53 S 06 56 17.462 +34 22 18.95 V C57
2022-01-09 11:23:53 s 1 -147931.90 1 +305736.18 7240.0 C57
2022-01-09 11:33:53 S 06 56 15.917 +34 21 55.22 V C57
2022-01-09 11:33:53 s 1 -148200.47 1 +305323.44 7280.0 C57
2022-01-09 11:43:53 S 06 56 14.278 +34 21 32.44 V C57
2022-01-09 11:43:53 s 1 -148468.54 3 +304909.66 4760.0 C57
2022-01-09 11:53:53 S 06 56 12.612 +34 21 08.89 V C57
2022-01-09 11:53:53 s 1 -148736.11 6 +304494.84 9700.0 C57
2022-01-09 12:03:53 S 06 56 10.975 +34 20 45.64 V C57
2022-01-09 12:03:53 s 1 -149003.18 7 +304078.98 2070.0 C57
2022-01-09 12:13:53 S 06 56 09.480 +34 20 20.94 V C57
2022-01-09 12:13:53 s 1 -149269.75 6 +303662.08 1880.0 C57