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91998 (1999 VE137)
Classification: Main-belt Asteroid          SPK-ID: 2091998
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1617502146471483 4.5519e-08  
a 3.067118018123499 3.0797e-08 au
q 2.571011020343887 1.3967e-07 au
i .3512622245152761 5.605e-06 deg
node 309.5636218036697 0.00080395 deg
peri 334.6462980441803 0.00080413 deg
M 50.70126333133445 1.7301e-05 deg
tp 2458724.181197616250
(2019-Aug-28.68119762)
9.2784e-05 TDB
period 1961.978111039937
5.37
2.955e-05
8.09e-08
d
yr
n .1834882856104769 2.7636e-09 deg/d
Q 3.563225015903111 3.5778e-08 au
  Orbit Determination Parameters
   # obs. used (total)      434  
   data-arc span      8972 days (24.56 yr)  
   first obs. used      1993-09-18  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5702  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:11:14  

Additional Information
 Earth MOID = 1.55456 au 
 Jupiter MOID = 1.59296 au 
 T_jup = 3.212 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456445.5 (2013-Jun-02.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1618826679432073 4.5376e-08  
q 2.571426643189326 1.3955e-07 au
tp 2456766.842697724333
(2014-Apr-19.34269772)
8.7737e-05 TDB
node 309.9526166739003 0.00080509 deg
peri 335.3409889463894 0.00080527 deg
i .3507218336277017 5.6045e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      434  
   data-arc span      8972 days (24.56 yr)  
   first obs. used      1993-09-18  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5702  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:11:14  

Additional Information
 Jupiter MOID = 1.59296 au 
 T_jup = 3.212 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.05895997963441E-15 -6.223727310160579E-15 8.883683583189358E-13 -5.176709461786644E-15 1.567785659473899E-13 4.110507085876908E-17
q -6.223727310160579E-15 1.947466326998218E-14 -2.719322488873527E-12 1.330964190802351E-14 -5.0126000172205E-13 2.787641494377901E-17
tp 8.883683583189358E-13 -2.719322488873527E-12 7.697774255311724E-9 -2.415921771650855E-11 1.51441604263177E-9 2.204545289168907E-14
node -5.176709461786644E-15 1.330964190802351E-14 -2.415921771650855E-11 6.481768086829762E-7 -6.481690435081463E-7 6.017251940245846E-10
peri 1.567785659473899E-13 -5.0126000172205E-13 1.51441604263177E-9 -6.481690435081463E-7 6.484646447467539E-7 -6.017120599565961E-10
i 4.110507085876908E-17 2.787641494377901E-17 2.204545289168907E-14 6.017251940245846E-10 -6.017120599565961E-10 3.14101339455987E-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 15.3   n/a MPO436415  

91998 (1999 VE137)          Discovered 1999-Nov-12 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 VE137 = 2002 EQ123 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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