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JPL Small-Body Database Browser
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18874 Raoulbehrend (1999 VZ22)
Classification: Main-belt Asteroid          SPK-ID: 2018874
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1060156923613954 3.9369e-08  
a 2.273168989799788 7.3286e-09 au
q 2.03217740549171 9.1699e-08 au
i 4.470493850755247 3.7692e-06 deg
node 103.5427788574419 5.4763e-05 deg
peri 274.2152044999855 5.7791e-05 deg
M 28.18518790310615 1.8522e-05 deg
tp 2458902.491341488650
(2020-Feb-22.99134149)
6.4314e-05 TDB
period 1251.83189075698
3.43
6.0538e-06
1.657e-08
d
yr
n .287578550009865 1.3907e-09 deg/d
Q 2.514160574107867 8.1056e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1241  
   data-arc span      23852 days (65.30 yr)  
   first obs. used      1954-08-08  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54948  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 23:55:34  

Additional Information
 Earth MOID = 1.03967 au 
 Jupiter MOID = 2.91738 au 
 T_jup = 3.600 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456786.5 (2014-May-09.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1067397981512791 3.9492e-08  
q 2.030955591010293 9.214e-08 au
tp 2456398.445026109547
(2013-Apr-15.94502611)
6.2311e-05 TDB
node 103.5836673333434 5.4805e-05 deg
peri 274.1571541345412 5.7763e-05 deg
i 4.469012040791992 3.7673e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1241  
   data-arc span      23852 days (65.30 yr)  
   first obs. used      1954-08-08  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54948  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 23:55:34  

Additional Information
 Jupiter MOID = 2.91738 au 
 T_jup = 3.600 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.5596461909551E-15 -3.630402483103135E-15 -2.727649817540405E-13 7.693323825967751E-15 -8.226256879533305E-14 -4.375094355757726E-16
q -3.630402483103135E-15 8.489812380686868E-15 6.19633198682565E-13 -1.83463737896469E-14 1.899940897744639E-13 1.094661137758597E-15
tp -2.727649817540405E-13 6.19633198682565E-13 3.882621144461885E-9 -2.318658051841321E-11 1.155010789657001E-9 3.315556254986329E-13
node 7.693323825967751E-15 -1.83463737896469E-14 -2.318658051841321E-11 3.003617676248748E-9 -3.000825814429066E-9 2.131190325042985E-11
peri -8.226256879533305E-14 1.899940897744639E-13 1.155010789657001E-9 -3.000825814429066E-9 3.336554333113736E-9 -2.114057679525135E-11
i -4.375094355757726E-16 1.094661137758597E-15 3.315556254986329E-13 2.131190325042985E-11 -2.114057679525135E-11 1.41922560691868E-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 15.0   n/a MPO344452  
rotation period rot_per 5.3436 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]

18874 Raoulbehrend           Discovered 1999 Nov. 8 by S. Sposetti at Gnosca.
Raoul Behrend (b. 1964) is a Swiss astronomer living in the French-speaking part of Switzerland. He is a specialist in stellar modeling but astrometry and photometry of minor planets are among his interests, too. He also strongly supports the collaboration between professional and amateur astronomers.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1999 VZ22 = 1995 ML = 1998 KT39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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