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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1698769631688639 6.9254e-08  
a 2.80819565319208 1.5484e-08 au
q 2.331147903643805 1.9699e-07 au
i 9.731945376181056 7.6541e-06 deg
node 21.61072381731706 2.8475e-05 deg
peri 12.4469091560654 3.4809e-05 deg
M 104.8607394299925 1.7351e-05 deg
tp 2458099.831940554353
(2017-Dec-12.33194055)
8.1932e-05 TDB
period 1718.855907179309
4.71
1.4217e-05
3.892e-08
d
yr
n .2094416399282533 1.7323e-09 deg/d
Q 3.285243402740354 1.8115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      657  
   data-arc span      8457 days (23.15 yr)  
   first obs. used      1996-03-12  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58877  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:41:21  

Additional Information
 Earth MOID = 1.33753 au 
 Jupiter MOID = 2.16886 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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