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6181 Bobweber (1986 RW)
Classification: Main-belt Asteroid          SPK-ID: 2006181
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2368368099335473 3.2896e-08  
a 2.43210021193586 8.0811e-09 au
q 1.856089356302267 8.1019e-08 au
i 7.574673682714562 4.9216e-06 deg
node 303.5728037260756 2.8936e-05 deg
peri 93.65986177120193 3.0958e-05 deg
M 290.6245617300639 1.193e-05 deg
tp 2459267.477009585809
(2021-Feb-21.97700959)
4.6611e-05 TDB
period 1385.385459864424
3.79
6.9048e-06
1.89e-08
d
yr
n .2598554773595143 1.2951e-09 deg/d
Q 3.008111067569454 9.995e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2120  
   data-arc span      24233 days (66.35 yr)  
   first obs. used      1954-03-28  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45139  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:37:12  

Additional Information
 Earth MOID = .881844 au 
 Jupiter MOID = 2.48609 au 
 T_jup = 3.456 
[ 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 13.6   n/a MPO337306  
diameter diameter 4.458 km 0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 2.75796 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2009) http://www.asu.cas.cz/~ppravec/neo.htm]
[Oey, J. (2016) Minor Planet Bull. 43, 45-51.]
geometric albedo albedo 0.425   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

6181 Bobweber           Discovered 1986 Sept. 6 by E. F. Helin at Palomar.
Robert Weber (1926-2008), a physicist at the Massachusetts Institute of Technology Lincoln Laboratory for 34 years, led the team that developed the deep space satellite tracking network. Co-developer of the LINEAR project, he was responsible for the discoveries during its first year of operation, 1995--1996.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080321/MPCPages.arcLast Updated: 2008-03-26

Alternate Designations
 1986 RW = 1979 YU8 = 1990 WL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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