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JPL Small-Body Database Browser
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976 Benjamina (A922 FD)
Classification: Main-belt Asteroid          SPK-ID: 2000976
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 70 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1015202250367984 3.7878e-08  
a 3.198773058063711 1.5381e-08 au
q 2.874032897367435 1.2628e-07 au
i 7.714086655909618 4.136e-06 deg
node 243.760255354763 3.0183e-05 deg
peri 319.3225725177246 3.621e-05 deg
M 335.1226162630809 2.043e-05 deg
tp 2458744.902853602497
(2019-Sep-18.40285360)
0.00011866 TDB
period 2089.650095309307
5.72
1.5072e-05
4.126e-08
d
yr
n .1722776462949953 1.2426e-09 deg/d
Q 3.523513218759986 1.6943e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2465  
   data-arc span      39935 days (109.34 yr)  
   first obs. used      1910-01-08  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45712  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:16:59  

Additional Information
 Earth MOID = 1.8755 au 
 Jupiter MOID = 1.49969 au 
 T_jup = 3.173 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.22   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
diameter diameter 83.195 km 0.542 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.701 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Bembrick, C. (2002) Minor Planet Bull. 29, 76-78.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.052   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.740   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.73 deg.
U-B UB 0.250   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.73 deg.
Tholen spectral type spec_T XD:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

976 Benjamina (A922 FD)          Discovered 1922-Mar-27 by Jekhovsky, B. at Algiers
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A922 FD = A910 AB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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