4034 Vishnu (1986 PA)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4440123499 ± 1.15e-02
Semi-major axis (a)1.0593661162 AU ± 1.24e-02
Inclination (i)11.16925766° ± 6.63e-01
Long. of Asc. Node (Ω)157.86471855° ± 1.66e+00
Arg. of Perihelion (ω)296.70262904° ± 3.25e+00
Mean Anomaly (M)261.95042071° ± 1.98e+00
Mean Motion (n)0.9039473986°/day ± 1.59e-02
Perihelion dist (q)0.58899448 AU ± 1.40e-02
Aphelion dist (Q)1.52973775 AU ± 2.17e-02
Orbital Period1.09035801 yr ± 1.92e-02
NGA Modelr2
A2-3.37481791e-06 AU/d²
Physical Parameters
H (abs. magnitude)18.50
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.333″
Uncertainty0
Orbit TypeApollo
MOID0.018713 AU
Observations Used1245
Radar Obs Used1
Oppositions1
Arc Total1986-2025
First Observation Used1986-08-02
Last Observation Used2025-06-24
Observations (1315)
Date Type RA Dec Mag Band Observatory
2021-07-18 13:10:24 C 00 18 03.26 +12 18 37.4 V T08
2021-07-18 13:16:25 C 00 18 04.05 +12 18 39.9 V T08
2021-07-18 13:37:42 C 00 18 06.78 +12 18 51.9 V T08
2021-07-19 10:00:13 C 00 20 53.02 +12 30 13.3 U I41
2021-07-19 10:12:00 C 00 20 54.57 +12 30 20.1 U I41
2021-07-19 10:59:23 C 00 21 00.91 +12 30 46.9 U I41
2021-07-19 11:02:50 C 00 21 01.37 +12 30 49.0 U I41
2021-07-20 13:21:55 C 00 24 41.88 +12 45 39.3 V T05
2021-07-20 13:29:51 C 00 24 43.00 +12 45 42.8 V T05
2021-07-20 13:32:29 C 00 24 43.34 +12 45 45.1 V T05
2021-07-20 13:41:15 C 00 24 44.55 +12 45 49.5 V T05
2021-08-03 05:10:33 C 01 23 14.76 +15 46 53.3 o Z22
2021-08-03 05:17:13 C 01 23 16.13 +15 46 57.4 o Z22
2021-08-03 13:35:37 C 01 25 11.02 +15 51 19.3 V T08
2021-08-03 13:39:36 C 01 25 11.91 +15 51 21.3 V T08
2021-08-03 13:43:36 C 01 25 12.81 +15 51 23.3 V T08
2021-08-03 14:30:32 C 01 25 23.31 +15 51 48.1 V T08
2021-08-05 13:24:09 C 01 36 42.34 +16 15 25.0 V T05
2021-08-05 13:27:35 C 01 36 43.17 +16 15 26.7 V T05
2021-08-05 13:31:32 C 01 36 44.11 +16 15 28.2 V T05
2021-08-05 13:38:49 C 01 36 45.92 +16 15 32.2 V T05
2021-08-05 15:07:26 C 01 37 07.55 +16 16 16.1 V T05
2021-08-07 12:43:47 C 01 49 07.493 +16 37 42.58 U F51
2021-08-07 13:24:51 C 01 49 18.464 +16 38 01.73 U F51
2021-08-07 13:45:24 C 01 49 23.961 +16 38 11.30 U F51
2021-08-07 13:47:58 C 01 49 24.65 +16 38 12.3 V T08
2021-08-07 13:54:06 C 01 49 26.25 +16 38 16.0 V T08
2021-08-07 14:00:19 C 01 49 27.93 +16 38 18.3 V T08
2021-08-07 14:34:47 C 01 49 37.15 +16 38 34.4 V T08
2021-08-09 13:29:30 C 02 03 05.19 +16 58 27.1 V T05
2021-08-09 13:35:44 C 02 03 07.00 +16 58 28.7 V T05
2021-08-09 13:41:38 C 02 03 08.76 +16 58 30.9 V T05
2021-08-09 13:52:24 C 02 03 11.87 +16 58 35.2 V T05
2021-08-15 14:02:22 C 02 52 41.76 +17 36 39.8 V T08
2021-08-15 14:11:33 C 02 52 45.29 +17 36 40.5 V T08
2021-08-15 14:35:29 C 02 52 54.39 +17 36 43.3 V T08
2021-08-15 14:40:54 C 02 52 56.43 +17 36 44.1 V T08
2021-08-17 14:03:05 C 03 12 11.32 +17 37 22.2 V T05
2021-08-17 14:07:43 C 03 12 13.28 +17 37 21.6 V T05
2021-08-17 14:16:19 C 03 12 16.81 +17 37 21.4 V T05
2021-08-17 14:30:38 C 03 12 22.77 +17 37 20.3 V T05
2021-08-19 13:26:17 C 03 32 56.18 +17 29 41.1 V T08
2021-08-19 13:35:24 C 03 33 00.24 +17 29 38.4 V T08
2021-08-19 13:50:06 C 03 33 06.78 +17 29 35.4 V T08
2021-08-20 12:17:39 S 03 43 23.890 +17 22 31.91 L C51
2021-08-20 15:25:47 S 03 44 51.871 +17 21 22.07 L C51
2021-08-20 16:59:51 S 03 45 35.964 +17 20 46.54 L C51
2021-08-20 17:00:02 S 03 45 36.084 +17 20 45.42 L C51
2021-08-20 18:34:06 S 03 46 20.285 +17 20 09.96 L C51
2021-08-20 20:08:10 S 03 47 04.615 +17 19 31.12 L C51
Radar Observations (2)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1989-03-26 14:00:00 56566 2 Hz 2380 -1 -1
1989-03-26.583333 5656600 200 Hz 2380 251 251
Station codes
-1 Arecibo (305-m, 1963–2020)