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JPL Small-Body Database Browser
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109138 (2001 QF55)
Classification: Main-belt Asteroid          SPK-ID: 2109138
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3192881943354104 7.5519e-08  
a 2.564237581285961 1.922e-08 au
q 1.745506794110167 1.8359e-07 au
i 4.359256443422741 5.1742e-06 deg
node 1.315496824935278 6.5982e-05 deg
peri 12.77985787308284 6.6878e-05 deg
M 87.71737268978104 1.9481e-05 deg
tp 2458235.057601489684
(2018-Apr-26.55760149)
7.7494e-05 TDB
period 1499.808526287978
4.11
1.6863e-05
4.617e-08
d
yr
n .2400306397050555 2.6987e-09 deg/d
Q 3.382968368461756 2.5357e-08 au
  Orbit Determination Parameters
   # obs. used (total)      513  
   data-arc span      8740 days (23.93 yr)  
   first obs. used      1995-03-02  
   last obs. used      2019-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61431  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:12:53  

Additional Information
 Earth MOID = .745779 au 
 Jupiter MOID = 2.08352 au 
 T_jup = 3.356 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456788.5 (2014-May-11.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3160417928635796 7.4876e-08  
q 1.755286539458579 1.8125e-07 au
tp 2456731.704552784207
(2014-Mar-15.20455278)
6.3769e-05 TDB
node 1.392909663410671 6.6048e-05 deg
peri 12.45151861543861 6.6982e-05 deg
i 4.356893018241742 5.1726e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      513  
   data-arc span      8740 days (23.93 yr)  
   first obs. used      1995-03-02  
   last obs. used      2019-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61431  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:12:53  

Additional Information
 Jupiter MOID = 2.08352 au 
 T_jup = 3.356 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.60648920340098E-15 -1.355759691184106E-14 2.606418669203746E-12 1.100296329412876E-14 1.795892584656052E-13 -7.552474640221874E-15
q -1.355759691184106E-14 3.285305516575469E-14 -5.973178224204349E-12 -2.420780016522824E-14 -3.679480659161885E-13 1.710378456105096E-14
tp 2.606418669203746E-12 -5.973178224204349E-12 4.066477323322272E-9 1.014320660233499E-11 6.984722867964259E-10 -1.208344507435966E-11
node 1.100296329412876E-14 -2.420780016522824E-14 1.014320660233499E-11 4.362321205955692E-9 -4.348316785154737E-9 -1.523753797261684E-10
peri 1.795892584656052E-13 -3.679480659161885E-13 6.984722867964259E-10 -4.348316785154737E-9 4.48659656127007E-9 1.498602872775527E-10
i -7.552474640221874E-15 1.710378456105096E-14 -1.208344507435966E-11 -1.523753797261684E-10 1.498602872775527E-10 2.675574229422116E-11

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 16.0   n/a MPO459509  

109138 (2001 QF55)          Discovered 2001-Aug-16 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 QF55 = 1995 EN9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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