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123 Brunhild (A872 OB)
Classification: Main-belt Asteroid          SPK-ID: 2000123
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1206203585726872 3.6396e-08  
a 2.695223627407444 8.4699e-09 au
q 2.370124787035979 9.8611e-08 au
i 6.414358267459116 4.76e-06 deg
node 307.7251516243001 3.5165e-05 deg
peri 125.6747977268146 4.0529e-05 deg
M 49.05219220038988 1.9612e-05 deg
tp 2458780.285173695791
(2019-Oct-23.78517370)
8.7849e-05 TDB
period 1616.183373530958
4.42
7.6185e-06
2.086e-08
d
yr
n .2227470012969442 1.05e-09 deg/d
Q 3.020322467778909 9.4916e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2908  
   data-arc span      53986 days (147.81 yr)  
   first obs. used      1872-08-02  
   last obs. used      2020-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4568  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:33:08  

Additional Information
 Earth MOID = 1.39205 au 
 Jupiter MOID = 2.22056 au 
 T_jup = 3.351 
[ 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 8.9   n/a MPO332813  
diameter diameter 45.209 km 1.883 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 9.873 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Barucci, M.A.; Di Martino, M. (1984) Astron. Astrophys. Suppl. Ser. 57, 103-106.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pilcher, F. (2016) Minor Planet Bull. 43, 222-224.]
geometric albedo albedo 0.261   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.850   0.019 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.22, mean=9.07, max.=20.32) deg.
U-B UB 0.395   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.22, mean=9.07, max.=20.32) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

123 Brunhild (A872 OB)          Discovered 1872-Jul-31 by Peters, C. H. F. at Clinton
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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