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49798 (1999 XL33)
Classification: Main-belt Asteroid          SPK-ID: 2049798
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1100388685628582 4.2476e-08  
a 2.21695670284277 9.2503e-09 au
q 1.973005295609108 9.3966e-08 au
i 2.717650725287315 4.1213e-06 deg
node 285.5293540908644 0.0001087 deg
peri 242.5987786556215 0.00011142 deg
M 271.0431199470777 2.751e-05 deg
tp 2458898.427975807589
(2020-Feb-18.92797581)
9.3078e-05 TDB
period 1205.686072026406
3.30
7.5461e-06
2.066e-08
d
yr
n .2985851859389445 1.8688e-09 deg/d
Q 2.460908110076433 1.0268e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1047  
   data-arc span      8420 days (23.05 yr)  
   first obs. used      1996-11-17  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53556  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:23:56  

Additional Information
 Earth MOID = .981765 au 
 Jupiter MOID = 2.51813 au 
 T_jup = 3.643 
[ 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 MPO351185  
diameter diameter 2.081 km 0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.282   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49798 (1999 XL33)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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