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3651 Friedman (1978 VB5)
Classification: Main-belt Asteroid          SPK-ID: 2003651
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1026804504588392 1.4416e-08  
a 2.378840217433333 7.9781e-09 au
q 2.134579832337675 3.7735e-08 au
i 7.319380914483581 2.4712e-07 deg
node 71.60321079178638 6.7865e-06 deg
peri 138.7595386361296 1.3462e-05 deg
M 31.70807099891174 1.4509e-05 deg
tp 2459082.464224858603
(2020-Aug-20.96422486)
5.3791e-05 TDB
period 1340.128166496199
3.67
6.7418e-06
1.846e-08
d
yr
n .2686310227634642 1.3514e-09 deg/d
Q 2.623100602528991 8.7973e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2096  
   data-arc span      28276 days (77.42 yr)  
   first obs. used      1943-03-09  
   last obs. used      2020-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45985  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:22:38  

Additional Information
 Earth MOID = 1.13288 au 
 Jupiter MOID = 2.35068 au 
 T_jup = 3.522 
[ 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 13.63   n/a E2021B10  
diameter diameter 5.641 km 0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.81 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:
[Binzel, R.P.; Xu, S.; Bus, S.J.; Bowell, E. (1992) Icarus 99, 225-237; Science 257, 779-782.]
geometric albedo albedo 0.169   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3651 Friedman (1978 VB5)          Discovered 1978-Nov-07 by Helin, E. F. and Bus, S. J. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1978 VB5 = 1943 ES = 1980 JM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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