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74256 (1998 SS77)
Classification: Main-belt Asteroid          SPK-ID: 2074256
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1699280937737237 6.4744e-08  
a 2.80774205480444 1.4898e-08 au
q 2.330627799623203 1.8528e-07 au
i 9.732754229890096 7.3221e-06 deg
node 21.60831201115352 2.2785e-05 deg
peri 12.34842531550306 2.6277e-05 deg
M 188.7796942419226 1.3635e-05 deg
tp 2459817.810361649439
(2022-Aug-26.31036165)
6.8715e-05 TDB
period 1718.439462487161
4.70
1.3678e-05
3.745e-08
d
yr
n .2094923957803894 1.6674e-09 deg/d
Q 3.284856309985677 1.743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      713  
   data-arc span      8812 days (24.13 yr)  
   first obs. used      1996-03-12  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58944  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:03:57  

Additional Information
 Earth MOID = 1.33762 au 
 Jupiter MOID = 2.17176 au 
 T_jup = 3.280 
[ 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 15.1   n/a MPO296658  

74256 (1998 SS77)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SS77 = 2003 SM251 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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