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JPL Small-Body Database Browser
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49929 (1999 XU176)
Classification: Main-belt Asteroid          SPK-ID: 2049929
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .08268930372445558 3.4861e-08  
a 2.227508661605055 7.9847e-09 au
q 2.04331752133674 7.6677e-08 au
i 6.793692269695192 4.946e-06 deg
node 33.57869128020499 2.6895e-05 deg
peri 102.4310378022176 4.0328e-05 deg
M 32.79047201927896 3.1302e-05 deg
tp 2458889.895525504733
(2020-Feb-10.39552550)
0.00010538 TDB
period 1214.304289211988
3.32
6.5292e-06
1.788e-08
d
yr
n .2964660531946393 1.5941e-09 deg/d
Q 2.411699801873371 8.6449e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1512  
   data-arc span      8864 days (24.27 yr)  
   first obs. used      1995-09-30  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48516  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 07:48:06  

Additional Information
 Earth MOID = 1.06909 au 
 Jupiter MOID = 2.60467 au 
 T_jup = 3.631 
[ 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 14.8   n/a MPO359076  
diameter diameter 2.884 km 0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.233   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49929 (1999 XU176)          Discovered 1999-Dec-10 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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