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4820 Fay (1985 RZ)
Classification: Main-belt Asteroid          SPK-ID: 2004820
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3522624240607032 3.6131e-08  
a 2.857807667131387 1.0985e-08 au
q 1.851109410808421 1.0241e-07 au
i 12.4446877217649 4.6012e-06 deg
node 331.5398730888816 2.0095e-05 deg
peri 96.60529086448329 2.1068e-05 deg
M 41.76841555010681 5.1053e-06 deg
tp 2458795.764373085805
(2019-Nov-08.26437309)
2.4994e-05 TDB
period 1764.606694278149
4.83
1.0174e-05
2.785e-08
d
yr
n .2040114667859547 1.1763e-09 deg/d
Q 3.864505923454352 1.4854e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2018  
   data-arc span      28224 days (77.27 yr)  
   first obs. used      1943-03-07  
   last obs. used      2020-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38945  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:48:25  

Additional Information
 Earth MOID = .912929 au 
 Jupiter MOID = 1.7494 au 
 T_jup = 3.175 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.9   n/a MPO365305  
diameter diameter 8.599 km 0.568 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.73 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Sergison, D. (2010) Minor Planet Bull. 37, 33-34.]
geometric albedo albedo 0.455   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4820 Fay (1985 RZ)          Discovered 1985-Sep-15 by Shoemaker, C. S. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1985 RZ = 1943 ER = 1951 RV = 1951 TP = 1975 RH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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