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
2022-01-05 11:13:53 S 07 12 09.509 +37 54 33.62 V C57
2022-01-05 11:13:53 s 1 +47100.187 0 +383383.11 2020.0 C57
2022-01-05 11:23:53 S 07 12 07.783 +37 54 12.60 V C57
2022-01-05 11:23:53 s 1 +46749.497 0 +383516.71 1580.0 C57
2022-01-05 11:33:53 S 07 12 06.226 +37 53 53.70 V C57
2022-01-05 11:33:53 s 1 +46398.680 0 +383649.38 860.0 C57
2022-01-05 11:43:53 S 07 12 04.625 +37 53 32.71 V C57
2022-01-05 11:43:53 s 1 +46047.733 0 +383781.09 9870.0 C57
2022-01-05 11:53:53 S 07 12 02.971 +37 53 13.63 V C57
2022-01-05 11:53:53 s 1 +45696.658 0 +383911.86 8610.0 C57
2022-01-05 12:03:53 S 07 12 01.315 +37 52 52.68 V C57
2022-01-05 12:03:53 s 1 +45345.459 0 +384041.70 7100.0 C57
2022-01-05 12:13:53 S 07 11 59.515 +37 52 32.27 V C57
2022-01-05 12:13:53 s 1 +44994.132 0 +384170.58 5320.0 C57
2022-01-05 12:23:53 S 07 11 57.934 +37 52 12.07 V C57
2022-01-05 12:23:53 s 1 +44642.681 0 +384298.52 3280.0 C57
2022-01-05 12:33:53 S 07 11 56.239 +37 51 51.44 V C57
2022-01-05 12:33:53 s 1 +44291.108 0 +384425.53 1000.0 C57
2022-01-05 12:43:53 S 07 11 54.605 +37 51 31.39 V C57
2022-01-05 12:43:53 s 1 +43939.411 0 +384551.59 8460.0 C57
2022-01-05 12:53:53 S 07 11 52.898 +37 51 10.40 V C57
2022-01-05 12:53:53 s 1 +43587.592 0 +384676.70 5680.0 C57
2022-01-05 13:03:53 S 07 11 51.420 +37 50 51.18 V C57
2022-01-05 13:03:53 s 1 +43235.655 0 +384800.89 2670.0 C57
2022-01-05 13:13:53 S 07 11 49.634 +37 50 31.24 V C57
2022-01-05 13:13:53 s 1 +42883.595 0 +384924.13 9420.0 C57
2022-01-05 13:23:53 S 07 11 48.038 +37 50 10.21 V C57
2022-01-05 13:23:53 s 1 +42531.417 0 +385046.42 5930.0 C57
2022-01-05 13:33:53 S 07 11 46.270 +37 49 48.94 V C57
2022-01-05 13:33:53 s 1 +42179.122 0 +385167.79 2220.0 C57
2022-01-05 13:43:53 S 07 11 44.609 +37 49 28.60 V C57
2022-01-05 13:43:53 s 1 +41826.709 0 +385288.21 8290.0 C57
2022-01-05 13:53:53 S 07 11 42.934 +37 49 09.01 V C57
2022-01-05 13:53:53 s 1 +41474.179 0 +385407.68 4140.0 C57
2022-01-05 14:03:53 S 07 11 41.304 +37 48 48.10 V C57
2022-01-05 14:03:53 s 1 +41121.537 0 +385526.23 9770.0 C57
2022-01-05 14:13:53 S 07 11 39.648 +37 48 28.40 V C57
2022-01-05 14:13:53 s 1 +40768.778 0 +385643.83 5190.0 C57
2022-01-05 14:23:53 S 07 11 38.035 +37 48 08.42 V C57
2022-01-05 14:23:53 s 1 +40415.905 0 +385760.48 410.0 C57
2022-01-05 14:33:53 S 07 11 36.353 +37 47 47.29 V C57
2022-01-05 14:33:53 s 1 +40062.922 0 +385876.21 5420.0 C57
2022-01-05 14:43:53 S 07 11 34.702 +37 47 27.56 V C57
2022-01-05 14:43:53 s 1 +39709.826 0 +385991.00 230.0 C57
2022-01-05 14:53:53 S 07 11 33.060 +37 47 07.44 V C57
2022-01-05 14:53:53 s 1 +39356.619 0 +386104.84 4850.0 C57
2022-01-05 15:23:53 S 07 11 28.032 +37 46 05.23 V C57
2022-01-05 15:23:53 s 1 +38296.347 0 +386440.76 7580.0 C57
2022-01-05 15:33:53 S 07 11 26.429 +37 45 45.47 V C57
2022-01-05 15:33:53 s 1 +37942.709 0 +386550.86 1460.0 C57