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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1561775745147468 3.6561e-08  
a 2.709025342759683 1.5557e-08 au
q 2.285936335428495 1.0001e-07 au
i 4.885567898882115 4.1306e-06 deg
node 57.64551735367755 5.9538e-05 deg
peri 216.1295222880255 6.1639e-05 deg
M 337.3626623810979 1.7283e-05 deg
tp 2458702.909648602141
(2019-Aug-07.40964860)
7.8525e-05 TDB
period 1628.613493222216
4.46
1.4029e-05
3.841e-08
d
yr
n .2210469221200784 1.9041e-09 deg/d
Q 3.132114350090871 1.7987e-08 au
  Orbit Determination Parameters
   # obs. used (total)      580  
   data-arc span      9458 days (25.89 yr)  
   first obs. used      1992-04-25  
   last obs. used      2018-03-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61236  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 00:39:19  

Additional Information
 Earth MOID = 1.27143 au 
 Jupiter MOID = 1.97909 au 
 T_jup = 3.341 
[ 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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