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1931 Capek (1969 QB)
Classification: Main-belt Asteroid          SPK-ID: 2001931
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2722511222948374 3.4781e-08  
a 2.540334532912059 1.0181e-08 au
q 1.84872560532242 8.6986e-08 au
i 8.264807970098479 3.6023e-06 deg
node 182.4131641220103 2.538e-05 deg
peri 164.5871897534191 2.6917e-05 deg
M 229.8858025559782 1.1627e-05 deg
tp 2459735.011411267660
(2022-Jun-04.51141127)
4.8818e-05 TDB
period 1478.886330902844
4.05
8.8905e-06
2.434e-08
d
yr
n .2434264165388721 1.4634e-09 deg/d
Q 3.231943460501699 1.2953e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2542  
   data-arc span      23119 days (63.30 yr)  
   first obs. used      1957-10-02  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46866  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:59:14  

Additional Information
 Earth MOID = .842092 au 
 Jupiter MOID = 2.21542 au 
 T_jup = 3.379 
[ 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 13.09   n/a E2021B10  
diameter diameter 6.628 km 0.214 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 156.208 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.254   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

1931           
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: Last Updated: 2017-04-19

Alternate Designations
 1969 QB = 1957 TK = 1969 PB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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