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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2508692448211952 5.2389e-08  
a 2.541705995614375 1.0112e-08 au
q 1.904070131937093 1.3716e-07 au
i 8.992442977699531 3.0215e-06 deg
node 93.82260954761671 5.4161e-05 deg
peri 335.3049268718693 5.8843e-05 deg
M 101.5072606343648 2.3731e-05 deg
tp 2458583.168656110592
(2019-Apr-09.66865611)
9.5704e-05 TDB
period 1480.084112813937
4.05
8.8328e-06
2.418e-08
d
yr
n .2432294197899117 1.4515e-09 deg/d
Q 3.179341859291657 1.2649e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2352  
   data-arc span      15070 days (41.26 yr)  
   first obs. used      1979-01-24  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41158  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:45:48  

Additional Information
 Earth MOID = .922685 au 
 Jupiter MOID = 2.13265 au 
 T_jup = 3.384 
[ 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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