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48787 (1997 SY4)
Classification: Main-belt Asteroid          SPK-ID: 2048787
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08899128828998472 3.9346e-08  
a 2.72080333648062 1.2093e-08 au
q 2.478675542383521 1.0567e-07 au
i 8.052804153372113 5.2574e-06 deg
node 349.3295044504044 2.9385e-05 deg
peri 318.82356498086 4.1375e-05 deg
M 54.91401396460577 2.8984e-05 deg
tp 2458750.451160570924
(2019-Sep-23.95116057)
0.00013179 TDB
period 1639.246081200462
4.49
1.0929e-05
2.992e-08
d
yr
n .2196131527344343 1.4641e-09 deg/d
Q 2.96293113057772 1.3169e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1245  
   data-arc span      10819 days (29.62 yr)  
   first obs. used      1991-03-18  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50295  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:35:47  

Additional Information
 Earth MOID = 1.47118 au 
 Jupiter MOID = 2.29812 au 
 T_jup = 3.339 
[ 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 14.5   n/a MPO436124  
diameter diameter 2.945 km 0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.268   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48787 (1997 SY4)          Discovered 1997-Sep-26 by Zoltowski, F. B. at Woomera
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 SY4 = 2000 EJ56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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