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JPL Small-Body Database Browser
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49778 (1999 XT)
Classification: Main-belt Asteroid          SPK-ID: 2049778
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2131185494529939 5.2994e-08  
a 2.178169094933441 9.2987e-09 au
q 1.713960856957886 1.1721e-07 au
i 7.272985700932682 4.0263e-06 deg
node 66.71078768448523 4.6199e-05 deg
peri 288.359913952283 4.7415e-05 deg
M 34.59121188263221 1.0307e-05 deg
tp 2458487.676623916936
(2019-Jan-04.17662392)
3.3413e-05 TDB
period 1174.183070767053
3.21
7.5189e-06
2.059e-08
d
yr
n .306596142426772 1.9633e-09 deg/d
Q 2.642377332908997 1.128e-08 au
  Orbit Determination Parameters
   # obs. used (total)      893  
   data-arc span      24843 days (68.02 yr)  
   first obs. used      1951-12-01  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5412  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:23:56  

Additional Information
 Earth MOID = .726188 au 
 Jupiter MOID = 2.82247 au 
 T_jup = 3.643 
[ 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 15.6   n/a MPO452847  

49778 (1999 XT)          Discovered 1999-Dec-02 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XT = 1995 FU17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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