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976 Benjamina (A922 FD)
Classification: Outer 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 77 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1027801673800513 1.9356e-08  
a 3.204729729991282 1.1049e-08 au
q 2.875347071934951 6.0741e-08 au
i 7.703687325676171 2.6544e-07 deg
node 243.7148312672434 2.8313e-06 deg
peri 320.1448231561695 8.8634e-06 deg
M 77.60894858104943 8.449e-06 deg
tp 2458748.753454868471
(2019-Sep-22.25345487)
4.8367e-05 TDB
period 2095.489749838736
5.74
1.0837e-05
2.967e-08
d
yr
n .1717975475793689 8.8848e-10 deg/d
Q 3.534112388047613 1.2185e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2998  
   data-arc span      40460 days (110.77 yr)  
   first obs. used      1910-01-08  
   last obs. used      2020-10-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43355  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:44:50  

Additional Information
 Earth MOID = 1.87528 au 
 Jupiter MOID = 1.48685 au 
 T_jup = 3.171 
[ 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 9.39   n/a E2021B10 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. 2020-October); 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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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