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1293 Sonja (1933 SO)
Classification: Mars-crossing Asteroid          SPK-ID: 2001293
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2750176660462029 1.7626e-08  
a 2.227917481169124 4.5572e-09 au
q 1.615200815354456 4.0617e-08 au
i 5.362521123353507 8.9972e-07 deg
node 236.3752423311168 4.1244e-06 deg
peri 99.748342540873 4.4098e-06 deg
M 100.3079028415895 4.0064e-06 deg
tp 2458862.061525771813
(2020-Jan-13.56152577)
1.2881e-05 TDB
period 1214.638600455626
3.33
3.7268e-06
1.02e-08
d
yr
n .296384455314494 9.0938e-10 deg/d
Q 2.840634146983791 5.8105e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2679  
   data-arc span      31946 days (87.46 yr)  
   first obs. used      1933-09-26  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4352  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:15:18  

Additional Information
 Earth MOID = .615297 au 
 Jupiter MOID = 2.58356 au 
 T_jup = 3.588 
[ 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 13.5   n/a MPO435708  
diameter diameter 7.80 km 0.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
rotation period rot_per 2.878 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Higgins, D.; Goncalves, R.M.D. (2007) Minor Planet Bull. 34, 16-18.]
[Benishek, V.; Protitch-Benishek, V. (2008) Minor Planet Bull. 35, 28-30.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2008) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2016) http://www.asu.cas.cz/~ppravec/neo.htm]
[Aznar, A.M. (2017) Minor Planet Bull. 44, 60-63.]
[Klinglesmith III, D.A. (2017) Minor Planet Bull. 44, 69-72.]
[Stephens, R.D. (2017) Minor Planet Bull. 44, 49-52.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46, 458-503.]
geometric albedo albedo 0.4598   0.095 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
SMASSII spectral type spec_B Sq   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)

1293 Sonja (1933 SO)          Discovered 1933-Sep-26 by Delporte, E. at Uccle
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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