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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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0826893011553957 3.4485e-08  
a 2.227508658697612 7.0685e-09 au
q 2.043317524392314 7.6243e-08 au
i 6.79369393174297 4.358e-06 deg
node 33.57869137426221 2.6802e-05 deg
peri 102.4310242077418 3.6855e-05 deg
M 32.79048751737958 2.5107e-05 deg
tp 2458889.895473445143
(2020-Feb-10.39547345)
8.4638e-05 TDB
period 1214.304286834543
3.32
5.78e-06
1.582e-08
d
yr
n .2964660537750803 1.4112e-09 deg/d
Q 2.411699793002911 7.653e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1760  
   data-arc span      8978 days (24.58 yr)  
   first obs. used      1995-09-30  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46037  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:58:18  

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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