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JPL Small-Body Database Browser
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361 Bononia (A893 EF)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000361
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 91 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2120207192390687 3.7721e-08  
a 3.960400232917156 2.4166e-08 au
q 3.120713327059486 1.4719e-07 au
i 12.61691120829331 5.4033e-06 deg
node 18.85456529743563 1.9147e-05 deg
peri 68.54015929955567 2.2875e-05 deg
M 144.3752217008931 1.2249e-05 deg
tp 2457845.991309724822
(2017-Apr-02.49130972)
9.4537e-05 TDB
period 2878.770495397916
7.88
2.6349e-05
7.214e-08
d
yr
n .1250533867064103 1.1446e-09 deg/d
Q 4.800087138774826 2.929e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2460  
   data-arc span      43411 days (118.85 yr)  
   first obs. used      1901-03-25  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42325  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:25:23  

Additional Information
 Earth MOID = 2.16609 au 
 Jupiter MOID = 1.06463 au 
 T_jup = 2.978 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455992.5 (2012-Mar-06.0) TDB
Reference: JPL 91 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2141658106942555 3.7804e-08  
q 3.114298126047012 1.4838e-07 au
tp 2454962.668731914750
(2009-May-11.16873191)
9.0947e-05 TDB
node 18.94322134302668 1.9125e-05 deg
peri 68.02233383728496 2.2755e-05 deg
i 12.62660714148054 5.4061e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2460  
   data-arc span      43411 days (118.85 yr)  
   first obs. used      1901-03-25  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42325  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:25:23  

Additional Information
 Jupiter MOID = 1.06463 au 
 T_jup = 2.978 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.429109129795469E-15 -5.560562521128137E-15 -5.717885079695745E-13 7.265217341358824E-16 -9.722577933371779E-14 -1.502750005939849E-15
q -5.560562521128137E-15 2.201677119454278E-14 2.1758459549834E-12 -2.023217373870488E-15 3.935921821951593E-13 6.420717841311165E-15
tp -5.717885079695745E-13 2.1758459549834E-12 8.271354231551349E-9 -5.104155341465222E-12 1.140862382906725E-9 2.484757448761243E-14
node 7.265217341358824E-16 -2.023217373870488E-15 -5.104155341465222E-12 3.657510323463262E-10 -3.573283521781213E-10 -2.88711934421696E-12
peri -9.722577933371779E-14 3.935921821951593E-13 1.140862382906725E-9 -3.573283521781213E-10 5.177744633612734E-10 2.873288025019876E-12
i -1.502750005939849E-15 6.420717841311165E-15 2.484757448761243E-14 -2.88711934421696E-12 2.873288025019876E-12 2.92264365154953E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.4   n/a MPO492753 IRAS observations used: 23
diameter diameter 154.334 km 5.413 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
rotation period rot_per 13.835 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Binzel, R.P.; Sauter, L.M. (1992) Icarus 95, 222-238.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Warner, B.D.; Stephens, R.D.; Coley, D.R. (2017) Minor Planet Bull. 44, 130-137.]
[Warner, B.D.; Stephens, R.D. (2018) Minor Planet Bull. 45, 262-265.]
geometric albedo albedo 0.038   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
B-V BV 0.743   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=1.21, mean=6.28, max.=9.31) deg.
U-B UB 0.271   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.86, mean=7.31, max.=8.75) deg.
Tholen spectral type spec_T DP   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices; used ground-based radiometric albedo

361 Bononia (A893 EF)          Discovered 1893-Mar-11 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A893 EF = 1953 VD2 = 1975 LJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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