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249273 (2008 SS197)
Classification: Main-belt Asteroid          SPK-ID: 2249273
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04597341450893778 6.1642e-08  
a 3.160053235090167 4.5309e-08 au
q 3.014774797843057 2.0082e-07 au
i 9.1354869220523 6.6364e-06 deg
node 196.5151543085412 3.3803e-05 deg
peri 312.751980435795 7.6075e-05 deg
M 207.6623814626067 6.9756e-05 deg
tp 2459468.749789228689
(2021-Sep-11.24978923)
0.000406 TDB
period 2051.823621265311
5.62
4.4129e-05
1.208e-07
d
yr
n .1754536775329628 3.7735e-09 deg/d
Q 3.305331672337278 4.7392e-08 au
  Orbit Determination Parameters
   # obs. used (total)      191  
   data-arc span      6259 days (17.14 yr)  
   first obs. used      2002-10-09  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5693  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 18:47:07  

Additional Information
 Earth MOID = 2.03293 au 
 Jupiter MOID = 1.69629 au 
 T_jup = 3.184 
[ 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 15.9   n/a MPO454847  
diameter diameter 3.449 km 0.726 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249273 (2008 SS197)          Discovered 2008-Sep-25 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

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