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109539 (2001 QR251)
Classification: Main-belt Asteroid          SPK-ID: 2109539
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06803766629193053 4.9451e-08  
a 3.02969897562891 2.1675e-08 au
q 2.823565327760067 1.4988e-07 au
i 9.198878143327768 5.2915e-06 deg
node 178.1609546611179 2.6605e-05 deg
peri 138.7538730049315 4.0477e-05 deg
M 198.8157938501192 3.258e-05 deg
tp 2459862.917639609568
(2022-Oct-10.41763961)
0.00017727 TDB
period 1926.183449827252
5.27
2.067e-05
5.659e-08
d
yr
n .1868980859701013 2.0056e-09 deg/d
Q 3.235832623497753 2.3149e-08 au
  Orbit Determination Parameters
   # obs. used (total)      592  
   data-arc span      10494 days (28.73 yr)  
   first obs. used      1991-09-15  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57113  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:11:25  

Additional Information
 Earth MOID = 1.81883 au 
 Jupiter MOID = 2.01551 au 
 T_jup = 3.220 
[ 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 15.0   n/a MPO426694  

109539 (2001 QR251)          Discovered 2001-Aug-25 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ hide close-approach data ]
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
1929-Jan-16 05:52 00:03 Jupiter 1.99844798712737 1.99844759375621 1.99844838049854 4.11682680362991 4.01255312860669 2425627.744613779 2.72685564580499 172.696196939819 16.72042505276 88.417836066093 3366475.08436004 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 19:11:26 2020-Nov-12 19:11

Alternate Designations
 2001 QR251 = 1995 MW1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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