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160649 (1999 XR74)
Classification: Main-belt Asteroid          SPK-ID: 2160649
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2982692287104405 3.6239e-08  
a 2.58898844339843 9.1312e-09 au
q 1.816772857245736 9.0992e-08 au
i 3.538995939475428 4.0743e-06 deg
node 229.3851490032506 8.1572e-05 deg
peri 169.489610597245 8.2126e-05 deg
M 39.0360289876281 1.1506e-05 deg
tp 2459035.510340704889
(2020-Jul-05.01034071)
4.8062e-05 TDB
period 1521.575807955892
4.17
8.0498e-06
2.204e-08
d
yr
n .2365968216093219 1.2517e-09 deg/d
Q 3.361204029551123 1.1855e-08 au
  Orbit Determination Parameters
   # obs. used (total)      871  
   data-arc span      7801 days (21.36 yr)  
   first obs. used      1999-10-12  
   last obs. used      2021-02-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46041  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:02:13  

Additional Information
 Earth MOID = .82375 au 
 Jupiter MOID = 2.06934 au 
 T_jup = 3.354 
[ 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 15.7   n/a MPO417855  

160649 (1999 XR74)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

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