IAA RAS IAA Minor Planet Database

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
2022-01-06 04:43:53 S 07 09 15.252 +37 18 29.92 – V C57
2022-01-06 04:53:53 S 07 09 13.560 +37 18 09.94 – V C57
2022-01-06 05:03:53 S 07 09 11.842 +37 17 48.05 – V C57
2022-01-06 05:13:53 S 07 09 10.188 +37 17 27.24 – V C57
2022-01-06 05:23:53 S 07 09 08.628 +37 17 05.78 – V C57
2022-01-06 05:33:53 S 07 09 06.958 +37 16 45.12 – V C57
2022-01-06 05:43:53 S 07 09 05.246 +37 16 24.06 – V C57
2022-01-06 05:53:53 S 07 09 03.542 +37 16 03.07 – V C57
2022-01-06 06:03:53 S 07 09 02.009 +37 15 42.41 – V C57
2022-01-06 06:13:53 S 07 09 00.283 +37 15 21.35 – V C57
2022-01-06 06:23:53 S 07 08 58.548 +37 15 00.50 – V C57
2022-01-06 06:33:53 S 07 08 56.909 +37 14 38.65 – V C57
2022-01-06 06:43:53 S 07 08 55.277 +37 14 18.56 – V C57
2022-01-06 06:53:53 S 07 08 53.614 +37 13 56.89 – V C57
2022-01-06 07:03:53 S 07 08 51.924 +37 13 35.62 – V C57
2022-01-06 07:13:53 S 07 08 50.316 +37 13 15.56 – V C57
2022-01-06 07:23:53 S 07 08 48.672 +37 12 54.54 – V C57
2022-01-06 07:33:53 S 07 08 47.095 +37 12 33.62 – V C57
2022-01-06 07:43:53 S 07 08 45.324 +37 12 11.88 – V C57
2022-01-06 07:53:53 S 07 08 43.656 +37 11 50.60 – V C57
2022-01-06 08:03:53 S 07 08 42.005 +37 11 30.08 – V C57
2022-01-06 08:13:53 S 07 08 40.339 +37 11 09.67 – V C57
2022-01-06 08:23:53 S 07 08 38.642 +37 10 46.70 – V C57
2022-01-06 08:33:53 S 07 08 36.929 +37 10 26.54 – V C57
2022-01-06 08:43:53 S 07 08 35.294 +37 10 06.42 – V C57
2022-01-06 08:53:53 S 07 08 33.694 +37 09 44.68 – V C57
2022-01-06 09:03:53 S 07 08 31.992 +37 09 23.26 – V C57
2022-01-06 09:13:53 S 07 08 30.482 +37 09 01.37 – V C57
2022-01-06 09:23:53 S 07 08 28.694 +37 08 40.09 – V C57
2022-01-06 09:33:53 S 07 08 26.897 +37 08 20.04 – V C57
2022-01-06 09:43:53 S 07 08 25.442 +37 07 58.98 – V C57
2022-01-06 09:53:53 S 07 08 23.731 +37 07 37.85 – V C57
2022-01-06 10:03:53 S 07 08 22.013 +37 07 16.72 – V C57
2022-01-06 10:13:53 S 07 08 20.402 +37 06 55.19 – V C57
2022-01-06 10:23:53 S 07 08 18.677 +37 06 34.52 – V C57
2022-01-06 10:33:53 S 07 08 17.040 +37 06 13.00 – V C57
2022-01-06 10:43:53 S 07 08 15.326 +37 05 51.86 – V C57
2022-01-06 10:53:53 S 07 08 13.735 +37 05 30.44 – V C57
2022-01-06 11:03:53 S 07 08 12.077 +37 05 09.24 – V C57
2022-01-06 11:13:53 S 07 08 10.418 +37 04 48.22 – V C57
2022-01-06 12:13:53 S 07 08 00.360 +37 02 40.67 – V C57
2022-01-06 12:23:53 S 07 07 58.762 +37 02 19.25 – V C57
2022-01-06 12:33:53 S 07 07 57.002 +37 01 58.66 – V C57
2022-01-06 12:43:53 S 07 07 55.486 +37 01 37.74 – V C57
2022-01-06 12:53:53 S 07 07 53.798 +37 01 16.18 – V C57
2022-01-06 13:03:53 S 07 07 52.214 +37 00 55.37 – V C57
2022-01-06 13:13:53 S 07 07 50.484 +37 00 36.58 – V C57
2022-01-06 13:23:53 S 07 07 48.706 +37 00 10.51 – V C57
2022-01-06 13:33:53 S 07 07 47.194 +36 59 50.86 – V C57
2022-01-06 13:43:53 S 07 07 45.492 +36 59 29.47 – V C57