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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08268930221983775 3.4605e-08  
a 2.227508660477126 7.4696e-09 au
q 2.043317523653627 7.6372e-08 au
i 6.793692772573403 4.6516e-06 deg
node 33.57869086922078 2.686e-05 deg
peri 102.431033248007 3.8356e-05 deg
M 32.79047774474005 2.7883e-05 deg
tp 2458889.895506276376
(2020-Feb-10.39550628)
9.3928e-05 TDB
period 1214.304288289669
3.32
6.108e-06
1.672e-08
d
yr
n .2964660534198187 1.4912e-09 deg/d
Q 2.411699797300626 8.0872e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1592  
   data-arc span      8894 days (24.35 yr)  
   first obs. used      1995-09-30  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4739  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:37:16  

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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