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
2022-01-01 09:23:53 S 07 27 49.505 +40 52 36.34 V C57
2022-01-01 09:23:53 s 1 +179216.63 8 +120671.35 280.0 C57
2022-01-01 09:33:53 S 07 27 47.981 +40 52 21.25 V C57
2022-01-01 09:33:53 s 1 +179281.88 6 +121487.27 7120.0 C57
2022-01-01 09:43:53 S 07 27 46.517 +40 52 06.02 V C57
2022-01-01 09:43:53 s 1 +179344.98 1 +122301.75 5070.0 C57
2022-01-01 09:53:53 S 07 27 45.127 +40 51 47.95 V C57
2022-01-01 09:53:53 s 1 +179405.93 5 +123114.77 4180.0 C57
2022-01-01 10:03:53 S 07 27 43.594 +40 51 32.69 V C57
2022-01-01 10:03:53 s 1 +179464.76 2 +123926.34 4490.0 C57
2022-01-01 10:13:53 S 07 27 42.180 +40 51 17.21 V C57
2022-01-01 10:13:53 s 1 +179521.47 3 +124736.46 6080.0 C57
2022-01-01 10:23:53 S 07 27 40.642 +40 51 01.62 V C57
2022-01-01 10:23:53 s 1 +179576.08 2 +125545.13 8980.0 C57
2022-01-01 10:33:53 S 07 27 39.163 +40 50 44.38 V C57
2022-01-01 10:33:53 s 1 +179628.60 0 +126352.35 3260.0 C57
2022-01-01 10:43:53 S 07 27 37.656 +40 50 28.46 V C57
2022-01-01 10:43:53 s 1 +179679.04 0 +127158.12 8970.0 C57
2022-01-01 10:53:53 S 07 27 36.180 +40 50 12.70 V C57
2022-01-01 10:53:53 s 1 +179727.41 4 +127962.43 6150.0 C57
2022-01-01 11:03:53 S 07 27 34.562 +40 49 56.60 V C57
2022-01-01 11:03:53 s 1 +179773.73 4 +128765.29 4870.0 C57
2022-01-01 11:13:53 S 07 27 33.125 +40 49 40.15 V C57
2022-01-01 11:13:53 s 1 +179818.01 3 +129566.70 5170.0 C57
2022-01-01 11:23:53 S 07 27 31.608 +40 49 24.13 V C57
2022-01-01 11:23:53 s 1 +179860.26 2 +130366.65 7110.0 C57
2022-01-01 11:33:53 S 07 27 30.144 +40 49 08.36 V C57
2022-01-01 11:33:53 s 1 +179900.49 3 +131165.16 730.0 C57
2022-01-01 11:43:53 S 07 27 28.627 +40 48 52.24 V C57
2022-01-01 11:43:53 s 1 +179938.71 8 +131962.20 6100.0 C57
2022-01-01 11:53:53 S 07 27 27.084 +40 48 34.81 V C57
2022-01-01 11:53:53 s 1 +179974.94 8 +132757.80 3240.0 C57
2022-01-01 12:03:53 S 07 27 25.534 +40 48 19.98 V C57
2022-01-01 12:03:53 s 1 +180009.19 5 +133551.94 2230.0 C57
2022-01-01 12:13:53 S 07 27 24.175 +40 48 03.24 V C57
2022-01-01 12:13:53 s 1 +180041.47 0 +134344.64 3100.0 C57
2022-01-01 12:23:53 S 07 27 22.406 +40 47 46.46 V C57
2022-01-01 12:23:53 s 1 +180071.78 5 +135135.87 5910.0 C57
2022-01-01 12:33:53 S 07 27 21.233 +40 47 30.73 V C57
2022-01-01 12:33:53 s 1 +180100.15 1 +135925.66 700.0 C57
2022-01-01 12:43:53 S 07 27 19.594 +40 47 15.00 V C57
2022-01-01 12:43:53 s 1 +180126.58 0 +136713.99 7520.0 C57
2022-01-01 12:53:53 S 07 27 18.077 +40 46 59.16 V C57
2022-01-01 12:53:53 s 1 +180151.08 1 +137500.87 6430.0 C57
2022-01-01 13:03:53 S 07 27 16.522 +40 46 42.38 V C57
2022-01-01 13:03:53 s 1 +180173.66 7 +138286.30 7460.0 C57
2022-01-01 13:13:53 S 07 27 15.038 +40 46 25.39 V C57
2022-01-01 13:13:53 s 1 +180194.34 8 +139070.28 660.0 C57
2022-01-01 13:23:53 S 07 27 13.555 +40 46 09.84 V C57
2022-01-01 13:23:53 s 1 +180213.13 6 +139852.81 6090.0 C57