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
2003-07-30 06:06:42 C 23 55 38.89 -42 32 26.9 m 859
2003-07-30 06:10:34 C 23 55 38.98 -42 32 32.1 m 859
2003-08-10 05:18:25 C 00 06 13.90 -49 46 37.8 m 859
2003-08-10 05:21:32 C 00 06 14.01 -49 46 43.0 m 859
2003-08-10 05:24:37 C 00 06 13.99 -49 46 48.8 m 859
2003-09-10 13:06:48 C 21 24 39.497 -85 41 01.30 r 413
2003-09-10 13:08:48 C 21 24 33.054 -85 41 06.93 r 413
2003-09-10 13:10:48 C 21 24 26.600 -85 41 12.55 r 413
2003-09-16 01:59:33 C 14 14 22.77 -81 21 26.3 c 844
2003-09-16 02:03:59 C 14 14 19.01 -81 21 03.9 c 844
2003-09-18 09:02:01 C 13 41 15.519 -76 36 58.81 r 413
2003-09-18 09:03:51 C 13 41 14.751 -76 36 48.40 r 413
2003-09-18 09:05:41 C 13 41 14.002 -76 36 38.03 r 413
2004-04-17 15:41:55 C 19 19 24.17 -30 12 43.0 r E17
2004-04-17 15:49:03 C 19 19 24.61 -30 12 47.6 r E17
2004-04-17 15:53:20 C 19 19 24.90 -30 12 50.4 r E17
2004-04-24 15:34:29 C 19 27 52.75 -31 30 27.4 r E17
2004-04-24 15:38:43 C 19 27 52.83 -31 30 30.1 r E17
2004-04-24 15:42:57 C 19 27 53.11 -31 30 31.9 r E17
2004-05-02 07:16:39 C 19 34 47.17 -33 09 53.8 r 859
2004-06-07 04:25:08 C 19 11 28.66 -44 49 13.2 r 859
2004-06-07 04:27:15 C 19 11 28.66 -44 49 15.4 r 859
2004-06-07 04:30:02 C 19 11 28.24 -44 49 16.8 r 859
2004-06-07 04:31:31 C 19 11 28.13 -44 49 18.8 r 859
2004-06-20 03:31:33 C 18 29 13.62 -48 45 37.0 r 859
2004-06-20 03:35:01 C 18 29 13.11 -48 45 39.2 r 859
2004-06-20 03:38:26 C 18 29 12.50 -48 45 40.0 r 859
2004-06-25 03:02:07 C 18 09 14.66 -49 37 22.3 r 859
2004-06-25 03:10:59 C 18 09 13.11 -49 37 25.6 r 859
2004-06-26 02:50:34 C 18 05 10.53 -49 44 21.6 r 859
2004-06-26 02:56:00 C 18 05 09.55 -49 44 23.1 r 859
2004-07-05 01:15:29 C 17 29 36.17 -49 56 59.5 r 859
2004-07-05 01:27:14 C 17 29 34.18 -49 56 58.3 r 859
2004-07-06 00:51:33 C 17 25 58.67 -49 53 17.1 r 859
2005-03-07 10:30:42 C 17 57 44.95 -07 41 49.5 18.2 c 704
2005-03-07 10:46:58 C 17 57 44.29 -07 42 05.7 18.5 c 704
2005-03-07 11:03:14 C 17 57 43.62 -07 42 21.4 18.6 c 704
2005-03-07 11:19:35 C 17 57 42.94 -07 42 37.6 18.4 c 704
2005-03-07 11:35:50 C 17 57 42.29 -07 42 53.3 18.7 c 704
2005-04-17 15:03:02 C 16 40 29.32 -24 39 17.2 r 428
2005-04-17 15:57:10 C 16 40 20.13 -24 40 10.9 r 428
2005-04-30 17:23:15 C 15 43 02.09 -28 38 03.6 r E12
2005-04-30 17:44:59 C 15 42 57.70 -28 38 14.0 r E12
2005-04-30 18:06:45 C 15 42 53.38 -28 38 23.6 r E12
2005-04-30 18:28:31 C 15 42 48.95 -28 38 32.9 r E12
2005-05-16 01:54:37 C 14 38 34.32 -29 33 17.5 r I77
2005-05-16 01:57:40 C 14 38 33.80 -29 33 16.8 r I77
2005-05-16 02:00:45 C 14 38 33.31 -29 33 16.3 r I77
2005-05-28 13:43:03 C 14 06 21.87 -28 35 03.7 r E12
2005-05-28 13:54:40 C 14 06 20.97 -28 35 00.8 r E12
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)