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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .16832330752129 3.6713e-08  
a 2.232903404010569 5.956e-09 au
q 1.857053717671963 8.1041e-08 au
i 5.705358488607568 3.6543e-06 deg
node 119.8143961167497 3.8484e-05 deg
peri 237.7476070389454 4.0111e-05 deg
M 345.4607846078117 1.185e-05 deg
tp 2458649.720021634635
(2019-Jun-15.22002163)		 4.0166e-05 TDB
period 1218.718294660446
3.34		 4.8762e-06
1.335e-08		 d
yr
n .2953922999082423 1.1819e-09 deg/d
Q 2.608753090349175 6.9586e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2538  
   data-arc span      23535 days (64.44 yr)  
   first obs. used      1955-06-22  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43138  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:40:12  

Additional Information
 Earth MOID = .858977 au 
 Jupiter MOID = 2.83261 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. 2019-January); 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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