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 09:33:53 s 1 -101359.25 1 +357512.79 9820.0 C57
2022-01-08 09:43:53 S 07 00 28.493 +35 22 12.29 V C57
2022-01-08 09:43:53 s 1 -101685.26 7 +357254.44 4970.0 C57
2022-01-08 09:53:53 S 07 00 26.892 +35 21 49.64 V C57
2022-01-08 09:53:53 s 1 -102011.02 0 +356995.13 8640.0 C57
2022-01-08 10:03:53 S 07 00 25.260 +35 21 26.35 V C57
2022-01-08 10:03:53 s 1 -102336.50 7 +356734.86 810.0 C57
2022-01-08 10:13:53 S 07 00 23.602 +35 21 03.10 V C57
2022-01-08 10:13:53 s 1 -102661.72 8 +356473.62 1500.0 C57
2022-01-08 10:23:53 S 07 00 22.042 +35 20 41.28 V C57
2022-01-08 10:23:53 s 1 -102986.68 1 +356211.43 680.0 C57
2022-01-08 10:33:53 S 07 00 20.350 +35 20 17.41 V C57
2022-01-08 10:33:53 s 1 -103311.36 6 +355948.27 8360.0 C57
2022-01-08 10:39:52 C 07 00 20.82 +35 12 27.5 V T05
2022-01-08 10:43:53 S 07 00 18.701 +35 19 55.13 V C57
2022-01-08 10:43:53 s 1 -103635.78 1 +355684.15 4520.0 C57
2022-01-08 10:44:30 C 07 00 20.07 +35 12 17.2 V T05
2022-01-08 10:53:45 C 07 00 18.60 +35 11 56.5 V T05
2022-01-08 10:53:53 S 07 00 17.184 +35 19 32.09 V C57
2022-01-08 10:53:53 s 1 -103959.92 5 +355419.07 9170.0 C57
2022-01-08 11:03:53 S 07 00 15.562 +35 19 10.56 V C57
2022-01-08 11:03:53 s 1 -104283.79 6 +355153.02 2300.0 C57
2022-01-08 11:13:53 S 07 00 13.855 +35 18 46.48 V C57
2022-01-08 11:13:53 s 1 -104607.39 4 +354886.01 3900.0 C57
2022-01-08 11:21:47 C 07 00 14.10 +35 10 53.7 V T05
2022-01-08 11:23:53 S 07 00 12.173 +35 18 21.46 V C57
2022-01-08 11:23:53 s 1 -104930.71 8 +354618.04 3960.0 C57
2022-01-08 11:33:53 S 07 00 10.150 +35 17 57.77 V C57
2022-01-08 11:33:53 s 1 -105253.76 5 +354349.10 2490.0 C57
2022-01-08 11:43:53 S 07 00 08.851 +35 17 39.59 V C57
2022-01-08 11:43:53 s 1 -105576.53 5 +354079.20 9480.0 C57
2022-01-08 12:43:53 S 06 59 59.102 +35 15 18.72 V C57
2022-01-08 12:43:53 s 1 -107507.26 5 +352439.49 8630.0 C57
2022-01-08 12:53:53 S 06 59 57.492 +35 14 54.64 V C57
2022-01-08 12:53:53 s 1 -107828.06 0 +352162.82 4640.0 C57
2022-01-08 13:03:53 S 06 59 55.790 +35 14 33.40 V C57
2022-01-08 13:03:53 s 1 -108148.56 8 +351885.18 9060.0 C57
2022-01-08 13:23:53 S 06 59 52.382 +35 13 47.10 V C57
2022-01-08 13:23:53 s 1 -108788.71 8 +351327.00 3120.0 C57
2022-01-08 13:33:53 S 06 59 50.808 +35 13 23.99 V C57
2022-01-08 13:33:53 s 1 -109108.35 7 +351046.46 2740.0 C57
2022-01-08 13:43:53 S 06 59 49.289 +35 13 00.55 V C57
2022-01-08 13:43:53 s 1 -109427.70 4 +350764.94 750.0 C57
2022-01-08 13:53:53 S 06 59 47.590 +35 12 37.62 V C57
2022-01-08 13:53:53 s 1 -109746.75 7 +350482.46 7140.0 C57
2022-01-08 14:03:53 S 06 59 46.022 +35 12 15.66 V C57
2022-01-08 14:03:53 s 1 -110065.51 5 +350199.01 1910.0 C57
2022-01-08 14:13:53 S 06 59 44.263 +35 11 52.30 V C57
2022-01-08 14:13:53 s 1 -110383.97 8 +349914.58 5050.0 C57
2022-01-08 14:23:53 S 06 59 42.672 +35 11 29.15 V C57