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2815 Soma (1982 RL)
Classification: Main-belt Asteroid          SPK-ID: 2002815
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1685114745358962 3.583e-08  
a 2.233300191558241 5.679e-09 au
q 1.856963483197462 7.8737e-08 au
i 5.705568623413428 3.4834e-06 deg
node 119.8116945018842 3.6179e-05 deg
peri 237.783521923498 3.7864e-05 deg
M 103.5588812805365 1.1545e-05 deg
tp 2458649.825706183245
(2019-Jun-15.32570618)
3.8815e-05 TDB
period 1219.04315895462
3.34
4.6498e-06
1.273e-08
d
yr
n .2953135804549487 1.1264e-09 deg/d
Q 2.60963689991902 6.6359e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2824  
   data-arc span      23889 days (65.40 yr)  
   first obs. used      1955-06-22  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41485  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:08:33  

Additional Information
 Earth MOID = .859787 au 
 Jupiter MOID = 2.83546 au 
 T_jup = 3.615 
[ 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 12.7   n/a MPO395021  
diameter diameter 6.641 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 2.73325 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2009) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pollock, J.; Pravec, P.; Kusnirak, P.; Hornoch, K.; et al. (2011) CBET 2705.]
geometric albedo albedo 0.365   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2815 Soma (1982 RL)          Discovered 1982-Sep-15 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1982 RL = 1955 MH = 1970 AC = 1974 DL = 1979 XB1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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