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49214 (1998 SJ123)
Classification: Main-belt Asteroid          SPK-ID: 2049214
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05695240906375611 3.1886e-08  
a 2.345124842423356 8.0237e-09 au
q 2.211564333092084 7.4044e-08 au
i 6.238751195376979 4.2792e-06 deg
node 13.49535715194693 3.3115e-05 deg
peri 225.7178027910103 5.1099e-05 deg
M 145.2374035996715 3.8617e-05 deg
tp 2458471.295713251871
(2018-Dec-18.79571325)
0.00014064 TDB
period 1311.738839358854
3.59
6.7321e-06
1.843e-08
d
yr
n .2744448736274053 1.4085e-09 deg/d
Q 2.478685351754627 8.4807e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1410  
   data-arc span      7722 days (21.14 yr)  
   first obs. used      1998-09-18  
   last obs. used      2019-11-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48558  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 03:40:34  

Additional Information
 Earth MOID = 1.2052 au 
 Jupiter MOID = 2.51095 au 
 T_jup = 3.551 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO395467  
diameter diameter 3.076 km 0.772 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.324   0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49214 (1998 SJ123)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SJ123 = 2000 DR82 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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