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146778 (2001 XX231)
Classification: Main-belt Asteroid          SPK-ID: 2146778
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0341830121432669 4.698e-08  
a 2.767704924027091 1.8883e-08 au
q 2.673096433000093 1.2287e-07 au
i 5.834046819121211 4.4578e-06 deg
node 58.02079480384 4.63e-05 deg
peri 164.685258445969 8.1798e-05 deg
M 218.7677024379347 6.7931e-05 deg
tp 2459660.295926537104
(2022-Mar-21.79592654)
0.00031708 TDB
period 1681.81455413182
4.60
1.7212e-05
4.712e-08
d
yr
n .2140545157702228 2.1906e-09 deg/d
Q 2.862313415054088 1.9529e-08 au
  Orbit Determination Parameters
   # obs. used (total)      531  
   data-arc span      10345 days (28.32 yr)  
   first obs. used      1991-09-30  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59483  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:39:18  

Additional Information
 Earth MOID = 1.66382 au 
 Jupiter MOID = 2.10609 au 
 T_jup = 3.330 
[ 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 15.5   n/a MPO453934  

146778 (2001 XX231)          Discovered 2001-Dec-15 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1901-May-08 15:14 00:03 David 0.0479573219735615 0.0479394758469292 0.0479751838134857 5.24596532861549 5.24596526856692 2415513.134807954 2.57659579072968 1633.83680888282 49.6186256999154 -57.0427588123218 121280.514865265 T 14 CATAB v2.0f-lin.ifort 2020-Feb-24 08:39:25 2020-Feb-24 08:39
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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