2017 YS4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.0574927889 ± 2.06e-03
Semi-major axis (a)1.3191268013 AU ± 2.92e-03
Inclination (i)11.85748108° ± 9.58e-02
Long. of Asc. Node (Ω)96.13315370° ± 7.20e-02
Arg. of Perihelion (ω)54.67513537° ± 5.81e-01
Mean Anomaly (M)19.20392981° ± 5.76e+00
Mean Motion (n)0.6505526644°/day ± 2.16e-03
Perihelion dist (q)1.24328652 AU ± 3.87e-03
Aphelion dist (Q)1.39496708 AU ± 4.12e-03
Orbital Period1.51505994 yr ± 5.03e-03
Physical Parameters
H (abs. magnitude)23.00
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.240″
Uncertainty4
Orbit TypeAmor
MOID0.281549 AU
Observations Used9
Oppositions1
Arc Total2017-2017
First Observation Used2017-12-24
Last Observation Used2017-12-26
Observations (9)
Date Type RA Dec Mag Band Observatory
2017-12-24 06:18:15 C 04 11 14.485 +12 06 14.18 U F51
2017-12-24 06:36:42 C 04 11 13.225 +12 06 38.52 U F51
2017-12-24 07:13:27 C 04 11 10.691 +12 07 27.75 U F51
2017-12-25 07:23:46 C 04 09 41.33 +12 39 23.1 o 291
2017-12-25 07:36:44 C 04 09 40.49 +12 39 39.9 o 291
2017-12-25 07:49:41 C 04 09 39.69 +12 39 56.6 o 291
2017-12-26 06:32:30 C 04 08 21.17 +13 10 00.9 o 291
2017-12-26 06:45:27 C 04 08 20.35 +13 10 17.5 o 291
2017-12-26 06:58:25 C 04 08 19.51 +13 10 34.4 o 291