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49341 (1998 WW2)
Classification: Main-belt Asteroid          SPK-ID: 2049341
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1557228791308234 3.2765e-08  
a 2.707402208041091 1.264e-08 au
q 2.285797741239783 8.6965e-08 au
i 4.884257287635067 3.956e-06 deg
node 57.62727473743725 4.8075e-05 deg
peri 215.9333097516918 5.0375e-05 deg
M 65.99964420780226 1.6174e-05 deg
tp 2458702.190771713709
(2019-Aug-06.69077171)
7.2152e-05 TDB
period 1627.150016823414
4.45
1.1395e-05
3.12e-08
d
yr
n .2212457341227862 1.5494e-09 deg/d
Q 3.129006674842398 1.4608e-08 au
  Orbit Determination Parameters
   # obs. used (total)      777  
   data-arc span      10409 days (28.50 yr)  
   first obs. used      1992-04-25  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57861  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:33:08  

Additional Information
 Earth MOID = 1.27176 au 
 Jupiter MOID = 1.98185 au 
 T_jup = 3.342 
[ 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 15.4   n/a MPO474374  
diameter diameter 4.489 km 0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49341 (1998 WW2)          Discovered 1998-Nov-17 by ODAS at Caussols
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WW2 = 2001 HK61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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