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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1062465430662559 3.0436e-08  
a 2.273503876165235 6.2188e-09 au
q 2.031951948674946 6.9149e-08 au
i 4.470245798165156 3.6942e-06 deg
node 103.5413692538436 4.3507e-05 deg
peri 274.281610679565 4.7187e-05 deg
M 141.9611837313653 1.8528e-05 deg
tp 2458902.747751247206
(2020-Feb-23.24775125)
6.3993e-05 TDB
period 1252.108533325317
3.43
5.1374e-06
1.407e-08
d
yr
n .2875150120125141 1.1797e-09 deg/d
Q 2.515055803655525 6.8795e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1572  
   data-arc span      24376 days (66.74 yr)  
   first obs. used      1954-08-08  
   last obs. used      2021-05-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50897  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:04:51  

Additional Information
 Earth MOID = 1.03869 au 
 Jupiter MOID = 2.91668 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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