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JPL Small-Body Database Browser
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304 Olga
Classification: Main-belt Asteroid          SPK-ID: 2000304
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2216072303591116 3.2606e-08  
a 2.403604094017612 4.6869e-09 au
q 1.870948047862547 7.7818e-08 au
i 15.8456192763298 3.2164e-06 deg
node 159.0305988052077 9.2585e-06 deg
peri 172.2867137663287 1.1522e-05 deg
M 328.3777770512098 7.3061e-06 deg
tp 2458720.059124180017
(2019-Aug-24.55912418)
2.7862e-05 TDB
period 1361.108761218595
3.73
3.9811e-06
1.09e-08
d
yr
n .2644902525479987 7.7361e-10 deg/d
Q 2.936260140172676 5.7255e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2643  
   data-arc span      46997 days (128.67 yr)  
   first obs. used      1891-02-28  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43574  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:51:55  

Additional Information
 Earth MOID = .861074 au 
 Jupiter MOID = 2.45781 au 
 T_jup = 3.440 
[ 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 9.74   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
magnitude slope G 0.07   n/a PDS3 (MPC 17258) Fit
diameter diameter 65.990 km 0.286 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 18.36 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1980) Icarus 43, 20-32.]
[Harris, A.W.; Young, J.W.; Bowell, E. (1980) Icarus 43, 181-183.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.047   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.708   0.017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=2.94, mean=13.31, max.=22.09) deg.
U-B UB 0.249   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=2.94, mean=13.31, max.=22.09) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Xc   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)

304 Olga          Discovered 1891-Feb-14 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1952 SJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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