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49347 (1998 WQ4)
Classification: Main-belt Asteroid          SPK-ID: 2049347
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2769434009803606 5.3289e-08  
a 2.527632635137585 1.2368e-08 au
q 1.827621456733631 1.3518e-07 au
i 17.54513581652461 3.9185e-06 deg
node 149.4840878186174 1.4093e-05 deg
peri 186.9989689638926 1.6782e-05 deg
M 81.6752708683733 1.1486e-05 deg
tp 2458267.489873140371
(2018-May-28.98987314)
4.6792e-05 TDB
period 1467.808363472332
4.02
1.0773e-05
2.949e-08
d
yr
n .2452636249791922 1.8001e-09 deg/d
Q 3.227643813541539 1.5793e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1526  
   data-arc span      7713 days (21.12 yr)  
   first obs. used      1998-09-21  
   last obs. used      2019-11-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49804  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 03:41:40  

Additional Information
 Earth MOID = .817761 au 
 Jupiter MOID = 2.16472 au 
 T_jup = 3.336 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO459187  
diameter diameter 3.510 km 0.449 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.360   0.195 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

49347 (1998 WQ4)          Discovered 1998-Nov-18 by CSS at Catalina
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 WQ4 = 2000 DO21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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