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13919 (1984 SO4)
Classification: Main-belt Asteroid          SPK-ID: 2013919
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1181653086551565 6.7071e-08  
a 2.276552798093103 1.5934e-08 AU
q 2.007543234036672 1.5692e-07 AU
i 4.97798380889649 5.6227e-06 deg
node 286.4263034598077 7.9307e-05 deg
peri 54.98660265243469 8.4246e-05 deg
M 307.6712604240913 3.4523e-05 deg
tp 2457182.869744948840
(2015-Jun-09.36974495)
0.0001215 JED
period 1254.628120487126
3.43
1.3172e-05
3.606e-08
d
yr
n .2869376145181771 3.0124e-09 deg/d
Q 2.545562362149535 1.7817e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      891  
   data-arc span      11170 days (30.58 yr)  
   first obs. used      1984-09-21  
   last obs. used      2015-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49556  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:19:10  

Additional Information
 Earth MOID = 1.00406 AU 
 T_jup = 3.594 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7 mag n/a MPO299063  
rotation period rot_per 6.02 h n/a LCDB (Rev. 2015-May); 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:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]

13919 (1984 SO4)          Discovered 1984-Sep-21 by Debehogne, H. at La Silla
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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