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JPL Small-Body Database Browser
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908 Buda (A918 WD)
Classification: Main-belt Asteroid          SPK-ID: 2000908
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1479601040208732 3.1766e-08  
a 2.473065669668352 7.5034e-09 au
q 2.107150615933772 8.0166e-08 au
i 13.41522569875644 3.7206e-06 deg
node 85.55087059788252 1.9931e-05 deg
peri 23.52282918386886 2.5617e-05 deg
M 357.4051007631664 1.6577e-05 deg
tp 2459010.739291276987
6.5423e-05 TDB
period 1420.534873721419
n .2534256684997087 1.1534e-09 deg/d
Q 2.838980723402932 8.6137e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2461  
   data-arc span      36957 days (101.18 yr)  
   first obs. used      1918-11-30  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39529  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:40:15  

Additional Information
 Earth MOID = 1.13002 au 
 Jupiter MOID = 2.33869 au 
 T_jup = 3.430 
[ 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 10.8   n/a MPO502161 IRAS observations used: 8
diameter diameter 30.749 km 0.492 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 14.572 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site,]
[Warner, B.D. (2009) Minor Planet Bull. 36, 109-116.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Oey, J.; Williams, H.; Groom, R. (2017) Minor Planet Bull. 44, 200-204.]
geometric albedo albedo 0.087   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.820   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.45 deg.
U-B UB 0.350   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=7.45 deg.
SMASSII spectral type spec_B L   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)

908 Buda (A918 WD)          Discovered 1918-Nov-30 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A918 WD = 1963 ME 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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