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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3523106741587756 1.4688e-08  
a 2.857330609528821 1.0111e-08 au
q 1.850662536191217 4.0803e-08 au
i 12.44545945060542 6.0484e-07 deg
node 331.5408695945715 2.4375e-06 deg
peri 96.57394022840361 3.1812e-06 deg
M 82.59929444232174 2.7148e-06 deg
tp 2458795.725631221955
(2019-Nov-08.22563122)
1.1551e-05 TDB
period 1764.164860534617
4.83
9.3641e-06
2.564e-08
d
yr
n .2040625613021816 1.0832e-09 deg/d
Q 3.863998682866425 1.3673e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2189  
   data-arc span      28506 days (78.05 yr)  
   first obs. used      1943-03-07  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39219  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:53:11  

Additional Information
 Earth MOID = .912028 au 
 Jupiter MOID = 1.75059 au 
 T_jup = 3.176 
[ 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 12.02   n/a E2021B10  
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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1959-May-11 17:33 00:01 Jupiter 1.87851610728022 1.87851556670587 1.87851664785468 0.445683404740521 n/a 2436700.231395324 1.25375869231196 34.5723167926371 4.17810571743178 -39.1068295733861 42875203.9481731 F 39 CATAB v2.0g-lin.ifort 2021-May-03 21:54:05 2021-May-03 21:54
1984-Jan-07 05:59 < 00:01 Jupiter 1.75105164438688 1.75105152879197 1.75105175998209 1.78637351456169 1.4912028641977 2445706.749354341 0.566423850728272 59.6310599182461 30.3083642095736 -68.3161008952697 3861338.55635841 T 39 CATAB v2.0g-lin.ifort 2021-May-03 21:54:05 2021-May-03 21:54
2008-Jul-30 03:27 < 00:01 Jupiter 1.83749474281551 1.83749457895855 1.83749490667852 2.91406379667394 2.75133347843824 2454677.644091082 0.137001001772405 212.962665492531 3.9020306325293 -88.7187136602013 16422423.9563568 T 39 CATAB v2.0g-lin.ifort 2021-May-03 21:54:05 2021-May-03 21:54
2089-Nov-18 23:51 00:01 Jupiter 1.89547418314695 1.89547347447982 1.89547489181644 0.599639906862918 n/a 2484374.493642888 1.36516286514757 117.034361698872 11.3198975957565 -73.2984849380806 23996649.7713558 F 39 CATAB v2.0g-lin.ifort 2021-May-03 21:54:05 2021-May-03 21:54
2114-Jul-12 23:05 00:01 Jupiter 1.73441693773348 1.73441668744903 1.73441718802188 2.06429958426581 1.81234922450668 2493375.462035154 1.48748823887545 152.38678882433 13.9926696744578 -67.1068150719658 5206989.715549 T 39 CATAB v2.0g-lin.ifort 2021-May-03 21:54:05 2021-May-03 21:54
2139-Jan-21 15:10 00:02 Jupiter 1.79780829996499 1.79780743525446 1.79780916473184 3.01353563122848 2.85291316769 2502334.132054623 1.93333669147107 530.097097703723 6.66818419441016 87.1469379055013 8374779.53170154 T 39 CATAB v2.0g-lin.ifort 2021-May-03 21:54:05 2021-May-03 21:54

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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