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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2215188374539466 3.2187e-08  
a 2.403461888516348 4.3312e-09 au
q 1.871049805107339 7.6617e-08 au
i 15.84636888625498 3.1495e-06 deg
node 159.023766512184 9.0486e-06 deg
peri 172.3499698912951 1.1304e-05 deg
M 74.14347733083861 7.1224e-06 deg
tp 2458720.198942253948
(2019-Aug-24.69894225)
2.6431e-05 TDB
period 1360.987971177981
3.73
3.6789e-06
1.007e-08
d
yr
n .2645137265161924 7.1501e-10 deg/d
Q 2.935873971925356 5.2907e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2819  
   data-arc span      47091 days (128.93 yr)  
   first obs. used      1891-02-28  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42377  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:23:54  

Additional Information
 Earth MOID = .86208 au 
 Jupiter MOID = 2.46165 au 
 T_jup = 3.440 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454843.5 (2009-Jan-12.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2210188474211293 3.2075e-08  
q 1.872296358325978 7.6254e-08 au
tp 2454637.034775938641
(2008-Jun-19.53477594)
2.1415e-05 TDB
node 159.1864260261978 9.0561e-06 deg
peri 172.2254584536488 1.133e-05 deg
i 15.8401427217415 3.1469e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2819  
   data-arc span      47091 days (128.93 yr)  
   first obs. used      1891-02-28  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42377  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:23:54  

Additional Information
 Jupiter MOID = 2.46165 au 
 T_jup = 3.440 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.028783093893082E-15 -2.44355833696943E-15 -1.873309007397684E-13 -1.200453398495305E-14 -2.167785828967788E-14 -8.705287865137975E-15
q -2.44355833696943E-15 5.814730174172924E-15 4.689723499007117E-13 2.833826313841528E-14 5.852250596905409E-14 2.0921992983789E-14
tp -1.873309007397684E-13 4.689723499007117E-13 4.586145238612915E-10 4.349548343258383E-12 1.49158375456011E-10 3.728108802071731E-12
node -1.200453398495305E-14 2.833826313841528E-14 4.349548343258383E-12 8.201327946735565E-11 -7.737774890473156E-11 -1.412273936835531E-11
peri -2.167785828967788E-14 5.852250596905409E-14 1.49158375456011E-10 -7.737774890473156E-11 1.283716520372523E-10 1.460858830972542E-11
i -8.705287865137975E-15 2.0921992983789E-14 3.728108802071731E-12 -1.412273936835531E-11 1.460858830972542E-11 9.903182472825719E-12

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.9   n/a MPO502155 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-August); 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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