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JPL Small-Body Database Browser
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505 Cava (A902 QA)
Classification: Main-belt Asteroid          SPK-ID: 2000505
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 95 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2457457165597183 3.8725e-08  
a 2.683161690939242 7.9328e-09 au
q 2.023786198553793 1.0393e-07 au
i 9.840041081969883 4.3567e-06 deg
node 90.86774008551612 2.6249e-05 deg
peri 337.0330897398339 2.7629e-05 deg
M 83.86975143746835 9.3353e-06 deg
tp 2458226.500045847253
(2018-Apr-18.00004585)
4.0887e-05 TDB
period 1605.346161009833
4.40
7.1193e-06
1.949e-08
d
yr
n .2242506997827461 9.945e-10 deg/d
Q 3.342537183324692 9.8822e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2206  
   data-arc span      42125 days (115.33 yr)  
   first obs. used      1904-01-10  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44158  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-29 19:08:41  

Additional Information
 Earth MOID = 1.0419 au 
 Jupiter MOID = 1.97546 au 
 T_jup = 3.311 
[ 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 8.61   n/a PDS3 (MPC 17259)  
magnitude slope G -0.03   n/a PDS3 (MPC 17259) Fit
diameter diameter 115 km n/a J.G. Williams (E-mail September 1990) based on IRTF albedo of 0.040
rotation period rot_per 8.1789 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Young, J.; Harris, A.W. (1985) Icarus 64, 528-530.]
[Harris, A.W.; Young, J.W.; Bowell, E.; Tholen, D.J. (1999) Icarus 142, 173-201.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Chiorny, V.G.; Shevchenko, V.G.; Krugly, Yu.N.; Velichko, F.P.; Gaftonyuk, N.M. (2007) Planet. Space Sci. 55, 986-997.]
[Higgins, D.J. (2011) http://www.david-higgins.com/Astronomy/asteroid/lightcurves.htm]
geometric albedo albedo 0.040   n/a J.G. Williams (E-mail September 1990) IRTF
B-V BV 0.683   0.033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=11.42 deg.
U-B UB 0.235   0.051 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=11.42 deg.
Tholen spectral type spec_T FC   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

505 Cava (A902 QA)          Discovered 1902-Aug-21 by Frost, R. H. at Arequipa
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A902 QA = 1947 WD = 1947 XF = 1963 NA = A904 AC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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