2063 Bacchus (1977 HB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3494289066 ± 2.00e+00
Semi-major axis (a)1.0779986113 AU ± 3.00e+00
Inclination (i)9.43469494° ± 4.00e+00
Long. of Asc. Node (Ω)33.03636030° ± 5.00e+00
Arg. of Perihelion (ω)55.35066867° ± 6.00e+00
Mean Anomaly (M)234.78705685° ± 2.00e-05
Mean Motion (n)0.8806127601°/day ± 3.68e+00
Perihelion dist (q)0.70131474 AU ± 2.91e+00
Aphelion dist (Q)1.45468249 AU ± 4.59e+00
Orbital Period1.11925051 yr ± 4.67e+00
NGA Modelr2
A2-3.62707582e-06 AU/d²
Physical Parameters
H (abs. magnitude)17.21
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.501″
Uncertainty0
Orbit TypeApollo
MOID0.067153 AU
Observations Used1463
Radar Obs Used7
Gaia Obs Used54
Oppositions4
Arc Total1977-2025
First Observation Used1977-04-24
Last Observation Used2025-06-15
Observations (1537)
Date Type RA Dec Mag Band Observatory
1996-04-21 21:30:10 C 12 19 24.95 +04 29 21.8 046
1996-04-21 21:32:35 C 12 19 24.79 +04 29 15.5 046
1996-04-21 21:34:43 C 12 19 24.66 +04 29 09.9 046
1996-04-21 21:53:16 C 12 19 22.51 +04 28 20.9 z 121
1996-04-22 04:17:31 C 12 19 01.72 +04 11 52.9 z 801
1996-04-22 04:24:54 C 12 19 01.23 +04 11 34.0 z 801
1996-04-22 21:38:58 C 12 18 08.89 +03 28 29.8 z 072
1996-04-22 21:43:35 C 12 18 08.64 +03 28 18.6 z 072
1996-04-23 18:39:57 C 12 17 11.17 +02 38 59.6 z 121
1996-04-23 19:33:14 C 12 17 08.34 +02 36 57.8 z 121
1996-04-23 22:28:58 C 12 16 59.24 +02 30 18.5 z 121
1996-04-23 23:00:59 C 12 16 57.65 +02 29 05.9 z 121
1996-04-23 23:22:18 C 12 16 56.65 +02 28 17.4 z 121
1996-04-23 23:49:53 C 12 16 56.42 +02 27 15.2 z 967
1996-04-24 12:37:46 C 12 16 26.24 +01 59 06.4 J 381
1996-04-24 12:39:40 C 12 16 26.14 +01 59 02.2 J 381
1996-04-26 04:53:23 C 12 15 02.46 +00 36 25.3 i 711
1996-04-26 05:02:32 C 12 15 02.07 +00 36 07.6 i 711
1996-05-02 21:40:37 C 12 12 25.67 -03 41 09.5 z 046
1996-05-02 21:44:32 C 12 12 25.61 -03 41 14.6 z 046
1996-05-05 21:17:28 C 12 12 25.93 -05 09 00.0 z 046
1996-05-05 21:23:24 C 12 12 25.93 -05 09 06.6 z 046
1996-05-05 21:26:22 C 12 12 25.91 -05 09 10.2 z 046
1996-05-07 04:38:15 C 12 12 37.09 -05 43 36.7 z 689
1996-05-15 01:50:04 C 12 15 35.80 -08 37 34.4 z 801
1996-05-15 02:04:26 C 12 15 36.07 -08 37 45.6 z 801
1996-05-18 02:18:33 C 12 17 28.30 -09 32 21.2 z 801
1996-05-27 04:20:54 C 12 25 04.05 -11 52 48.0 i 711
1996-05-27 04:25:29 C 12 25 04.22 -11 52 50.8 i 711
1996-05-28 03:23:17 C 12 26 01.28 -12 06 04.8 i 711
1996-06-08 09:41:15 C 12 38 48.05 -14 27 15.9 413
1996-06-08 09:45:52 C 12 38 48.26 -14 27 18.2 413
1997-05-17 12:08:42 C 08 43 08.70 +22 43 18.9 z 381
1997-05-17 12:11:54 C 08 43 09.42 +22 43 15.1 z 381
2003-06-06 11:11:30 C 22 27 18.77 -28 07 33.7 c 673
2003-06-06 11:15:50 C 22 27 19.14 -28 07 34.9 c 673
2003-06-06 11:19:39 C 22 27 19.55 -28 07 35.8 c 673
2003-06-07 11:17:50 C 22 29 16.58 -28 12 22.9 c 673
2003-06-07 11:22:39 C 22 29 16.97 -28 12 23.7 c 673
2003-06-07 11:27:29 C 22 29 17.36 -28 12 24.9 c 673
2003-06-07 11:32:20 C 22 29 17.70 -28 12 26.1 c 673
2003-06-07 11:37:09 C 22 29 18.08 -28 12 27.0 c 673
2003-06-07 11:41:59 C 22 29 18.44 -28 12 28.2 c 673
2003-06-13 07:30:24 C 22 40 30.76 -28 45 29.1 m 859
2003-06-13 07:36:29 C 22 40 31.15 -28 45 29.7 m 859
2003-06-13 07:45:02 C 22 40 31.77 -28 45 32.1 m 859
2003-07-29 05:45:35 C 23 54 28.05 -41 58 29.2 m 859
2003-07-29 05:47:21 C 23 54 28.06 -41 58 32.1 m 859
2003-07-29 05:51:23 C 23 54 28.06 -41 58 37.0 m 859
2003-07-30 06:02:55 C 23 55 38.84 -42 32 22.3 m 859
Radar Observations (19)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1996-03-22 18:00:00 384093.223 2.3 Hz 8510 -14 -14
1996-03-22 20:10:00 87190665 15 us 8510 -14 -14
1996-03-22 22:50:00 86769151 2 us 8510 -14 -14
1996-03-22 22:50:00 371573.7 2 Hz 8510 -14 -14
1996-03-22.750000 38409322 200 Hz 8510 253 253
1996-03-22.840278 8719066500 15000 us 8510 253 253
1996-03-22.951389 8676915100 2000 us 8510 253 253
1996-03-24 17:50:00 324347 2 Hz 8510 -14 -14
1996-03-24 22:10:00 79673366 1 us 8510 -14 -14
1996-03-24 23:00:00 79562896 10 us 8510 -14 -14
1996-03-24.743056 32434700 200 Hz 8510 253 253
1996-03-24.923611 7967336600 1000 us 8510 253 253
1996-03-24.958333 7956289600 10000 us 8510 253 253
1996-03-29 19:30:00 96363 2 Hz 8510 -14 -14
1996-03-29.812500 9636300 200 Hz 8510 253 253
2012-09-13 11:31:00 -76858.4372 0.3 Hz 2380 -1 -1
2012-09-13 12:27:00 248520536.79 4 us 2380 -1 -1
2012-09-14 12:21:00 251520636.56 4 us 2380 -1 -1
2015-04-18 23:59:00 217913625.88 4 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)