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70872 (1999 VP157)
Classification: Main-belt Asteroid          SPK-ID: 2070872
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08741677534716256 3.647e-08  
a 2.396854838294319 1.0318e-08 au
q 2.187329517355385 8.7506e-08 au
i 8.262564453180252 4.7447e-06 deg
node 218.4092722179614 2.1167e-05 deg
peri 227.3470727929056 3.3111e-05 deg
M 144.9908797021539 2.6809e-05 deg
tp 2458454.617452443510
(2018-Dec-02.11745244)
9.9332e-05 TDB
period 1355.379852332994
3.71
8.7519e-06
2.396e-08
d
yr
n .2656081978644861 1.7151e-09 deg/d
Q 2.606380159233253 1.122e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1210  
   data-arc span      7564 days (20.71 yr)  
   first obs. used      1999-10-01  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5107  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:37:15  

Additional Information
 Earth MOID = 1.21194 au 
 Jupiter MOID = 2.59633 au 
 T_jup = 3.509 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457302.5 (2015-Oct-07.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08735810614016276 3.6304e-08  
q 2.188281536917246 8.702e-08 au
tp 2457101.436962347317
(2015-Mar-19.93696235)
9.6254e-05 TDB
node 218.4406349808011 2.1182e-05 deg
peri 227.9818568322934 3.3195e-05 deg
i 8.258126871713332 4.7429e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1210  
   data-arc span      7564 days (20.71 yr)  
   first obs. used      1999-10-01  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5107  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:37:15  

Additional Information
 Jupiter MOID = 2.59633 au 
 T_jup = 3.509 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.318015507297769E-15 -3.140783640190141E-15 -1.347435400139771E-12 7.226726803672681E-15 -3.768683149930912E-13 8.854739343018168E-16
q -3.140783640190141E-15 7.572511194050747E-15 3.540518741423795E-12 -1.820371712607335E-14 9.860927994785269E-13 -2.085773856089617E-15
tp -1.347435400139771E-12 3.540518741423795E-12 9.264864845725039E-9 -2.970042515768762E-11 2.465693603496815E-9 1.080534009843475E-12
node 7.226726803672681E-15 -1.820371712607335E-14 -2.970042515768762E-11 4.486912125995603E-10 -4.514763774977023E-10 4.509305291129459E-12
peri -3.768683149930912E-13 9.860927994785269E-13 2.465693603496815E-9 -4.514763774977023E-10 1.101898135232265E-9 -4.221498476907401E-12
i 8.854739343018168E-16 -2.085773856089617E-15 1.080534009843475E-12 4.509305291129459E-12 -4.221498476907401E-12 2.249472024801118E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO432262  
diameter diameter 2.351 km 0.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 15.4956 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.351   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70872 (1999 VP157)          Discovered 1999-Nov-14 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 VP157 = 1988 VQ9 = 2001 FQ90 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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