511684 (2015 BN509)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5684477447 ± 1.02e-07
Semi-major axis (a)1.0068564876 AU ± 6.48e-09
Inclination (i)4.15644872° ± 2.82e-06
Long. of Asc. Node (Ω)120.06180332° ± 1.29e-05
Arg. of Perihelion (ω)143.22233890° ± 1.57e-05
Mean Anomaly (M)196.44512386° ± 1.24e-05
Mean Motion (n)0.9755755715°/day ± 9.42e-09
Perihelion dist (q)0.43451119 AU ± 1.02e-07
Aphelion dist (Q)1.57920179 AU ± 1.03e-07
Orbital Period1.01030234 yr ± 9.75e-09
NGA Modelr2
A26.82337960e-14 ± 1.03e-14 AU/d²
Physical Parameters
H (abs. magnitude)20.77
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.291″
Uncertainty0
Orbit TypeApollo
MOID0.024692 AU
Observations Used560
Radar Obs Used6
Oppositions1
Arc Total2005-2026
First Observation Used2005-12-03
Last Observation Used2026-01-09
Observations (654)
Date Type RA Dec Mag Band Observatory
2025-12-27 16:53:35 C 07 35 07.23 +17 46 46.5 V D29
2025-12-27 17:34:18 C 07 35 01.79 +17 47 01.8 V D29
2026-01-09 15:24:26 C 06 46 57.232 +19 53 02.50 W O18
2026-01-09 16:13:25 C 06 46 48.310 +19 53 22.20 W O18
Radar Observations (7)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2017-02-05 08:19:00 175255.5269 0.05 Hz 2380 -1 -1
2017-02-05 08:48:00 50173360.33 4 us 2380 -1 -1
2017-02-05 09:00:00 50120970.13 0.5 us 2380 -1 -1
2017-02-06 09:44:00 114912.8058 0.1 Hz 2380 -1 -1
2017-02-07 10:13:00 41854278.24 0.5 us 2380 -1 -1
2018-02-08 08:40:00 36146165.35 2 us 8560 -14 -14
2018-02-10 01:20:00 32960780.129 1 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)