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48448 (1990 WR2)
Classification: Main-belt Asteroid          SPK-ID: 2048448
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2509100748516636 6.308e-08  
a 2.54237915136531 1.1548e-08 au
q 1.904470608194931 1.6604e-07 au
i 8.992416879055174 3.3613e-06 deg
node 93.82286242838755 5.5641e-05 deg
peri 335.3691186833379 6.1272e-05 deg
M 4.176435660923683 2.6076e-05 deg
tp 2458583.322411323902
(2019-Apr-09.82241132)
0.00010716 TDB
period 1480.67213898556
4.05
1.0088e-05
2.762e-08
d
yr
n .2431328249659939 1.6565e-09 deg/d
Q 3.18028769453569 1.4445e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2109  
   data-arc span      14915 days (40.84 yr)  
   first obs. used      1979-01-24  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42586  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 03:35:04  

Additional Information
 Earth MOID = .922872 au 
 Jupiter MOID = 2.13119 au 
 T_jup = 3.383 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO365818  
diameter diameter 4.188 km 0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.277   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48448 (1990 WR2)          Discovered 1990-Nov-21 by Endate, K., Watanabe, K. at Kitami
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 WR2 = 1979 BY = 1994 VT1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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