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1137 Raissa (1929 WB)
Classification: Main-belt Asteroid          SPK-ID: 2001137
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 77 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0963292170317019 3.7852e-08  
a 2.423624003310519 7.2403e-09 au
q 2.190158200692378 9.2244e-08 au
i 4.316281989305535 4.1636e-06 deg
node 78.44414335803523 5.7189e-05 deg
peri 277.1928325847443 6.1509e-05 deg
M 33.69967942081671 2.3069e-05 deg
tp 2458871.491132383429
(2020-Jan-22.99113238)
8.8248e-05 TDB
period 1378.149381245358
3.77
6.1756e-06
1.691e-08
d
yr
n .2612198683967682 1.1706e-09 deg/d
Q 2.65708980592866 7.9378e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2671  
   data-arc span      42387 days (116.05 yr)  
   first obs. used      1903-12-19  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44776  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:46:38  

Additional Information
 Earth MOID = 1.1906 au 
 Jupiter MOID = 2.71602 au 
 T_jup = 3.502 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.6   n/a MPO256870  
diameter diameter 19.421 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 142.79 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ferrero, A.; Klinglesmith III, D.A.; Pilcher, F. (2014) Minor Planet Bull. 41, 33.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.228   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.950   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=4.81 deg.
U-B UB 0.350   0.060 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=4.81 deg.

1137 Raissa (1929 WB)          Discovered 1929-Oct-27 by Neujmin, G. at Simeis
Independent discovery Nov. 21 by K. Reinmuth, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1929 WB = A908 BB = A910 TB = A924 JA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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