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74252 (1998 SS72)
Classification: Main-belt Asteroid          SPK-ID: 2074252
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1090727952997187 3.2622e-08  
a 2.327287542473264 7.9709e-09 au
q 2.073443784749492 7.6012e-08 au
i 7.434804574725183 4.332e-06 deg
node 40.21066764250074 3.1695e-05 deg
peri 243.9770051733266 3.9827e-05 deg
M 120.6824507004997 2.4003e-05 deg
tp 2458565.774501502388
(2019-Mar-23.27450150)
8.67e-05 TDB
period 1296.801469896669
3.55
6.6623e-06
1.824e-08
d
yr
n .2776061011317988 1.4262e-09 deg/d
Q 2.581131300197035 8.8403e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1174  
   data-arc span      8075 days (22.11 yr)  
   first obs. used      1998-09-18  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53279  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:24  

Additional Information
 Earth MOID = 1.06996 au 
 Jupiter MOID = 2.54018 au 
 T_jup = 3.554 
[ 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 15.0   n/a MPO436302  
diameter diameter 2.491 km 0.491 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.342   0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74252 (1998 SS72)          Discovered 1998-Sep-21 by Elst, E. W. at La Silla
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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