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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08899126753238079 4.5133e-08  
a 2.720803342500255 1.4046e-08 au
q 2.478675604344819 1.2494e-07 au
i 8.052799431331531 6.0118e-06 deg
node 349.329518061769 3.0119e-05 deg
peri 318.8235235308222 4.3981e-05 deg
M 54.91403446621911 3.0657e-05 deg
tp 2458750.451066387790
(2019-Sep-23.95106639)
0.00013974 TDB
period 1639.246086640582
4.49
1.2694e-05
3.475e-08
d
yr
n .2196131520056104 1.7006e-09 deg/d
Q 2.962931080655691 1.5296e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1068  
   data-arc span      10446 days (28.60 yr)  
   first obs. used      1991-03-18  
   last obs. used      2019-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52515  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:38:34  

Additional Information
 Earth MOID = 1.47118 au 
 Jupiter MOID = 2.29812 au 
 T_jup = 3.339 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456288.5 (2012-Dec-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08990105732266031 4.537e-08  
q 2.476109537710711 1.26e-07 au
tp 2455477.423534033980
(2010-Oct-07.92353403)
0.00014281 TDB
node 349.450294785803 3.0091e-05 deg
peri 320.0700996112596 4.3668e-05 deg
i 8.057266508367372 6.0152e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1068  
   data-arc span      10446 days (28.60 yr)  
   first obs. used      1991-03-18  
   last obs. used      2019-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52515  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:38:34  

Additional Information
 Jupiter MOID = 2.29812 au 
 T_jup = 3.339 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.058402627724427E-15 -5.686988973367821E-15 2.380590944932592E-12 1.13385792120511E-14 4.872729268919992E-13 -2.533461895580594E-15
q -5.686988973367821E-15 1.587659483405335E-14 -7.024705530325773E-12 -3.356689403319941E-14 -1.430098164673327E-12 7.92134695234727E-15
tp 2.380590944932592E-12 -7.024705530325773E-12 2.039404572488914E-8 3.941233081776444E-11 4.528938720740273E-9 -5.180176356478488E-12
node 1.13385792120511E-14 -3.356689403319941E-14 3.941233081776444E-11 9.054632781664066E-10 -8.87220439184666E-10 2.712274270601253E-11
peri 4.872729268919992E-13 -1.430098164673327E-12 4.528938720740273E-9 -8.87220439184666E-10 1.906851492902672E-9 -2.774473090242549E-11
i -2.533461895580594E-15 7.92134695234727E-15 -5.180176356478488E-12 2.712274270601253E-11 -2.774473090242549E-11 3.618226267304639E-11

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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