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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1061441055868504 3.0491e-08  
a 2.273559674264503 6.2082e-09 au
q 2.032234716141367 6.9286e-08 au
i 4.470378615611101 3.7011e-06 deg
node 103.5429420656402 4.3586e-05 deg
peri 274.2710296739285 4.7273e-05 deg
M 85.62995982184925 1.8495e-05 deg
tp 2458902.661248425483
(2020-Feb-23.16124843)
6.4066e-05 TDB
period 1252.15462893943
3.43
5.1287e-06
1.404e-08
d
yr
n .2875044277118701 1.1776e-09 deg/d
Q 2.51488463238764 6.8672e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1549  
   data-arc span      24331 days (66.61 yr)  
   first obs. used      1954-08-08  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50946  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:48:36  

Additional Information
 Earth MOID = 1.03834 au 
 Jupiter MOID = 2.9166 au 
 T_jup = 3.599 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.07   n/a MPCxxxxx  
rotation period rot_per 5.3436 h n/a LCDB (Rev. 2020-October); 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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