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4869 Piotrovsky (1989 UE8)
Classification: Main-belt Asteroid          SPK-ID: 2004869
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1739369583990021 1.5414e-08  
a 2.235154916134022 5.0241e-09 au
q 1.846378868471094 3.4506e-08 au
i 3.546020438302917 1.0431e-06 deg
node 96.25778719499333 1.7787e-05 deg
peri 217.6606787195585 1.7765e-05 deg
M 184.3265488806312 6.6018e-06 deg
tp 2459796.112087309985
(2022-Aug-04.61208731)
2.3242e-05 TDB
period 1220.562071646771
3.34
4.1153e-06
1.127e-08
d
yr
n .2949460812871985 9.9445e-10 deg/d
Q 2.62393096379695 5.898e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2997  
   data-arc span      24039 days (65.82 yr)  
   first obs. used      1955-05-27  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43611  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:54:40  

Additional Information
 Earth MOID = .831886 au 
 Jupiter MOID = 2.64267 au 
 T_jup = 3.616 
[ 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 13.18   n/a MPCxxxxx  
diameter diameter 6.278 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.215   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4869 Piotrovsky (1989 UE8)          Discovered 1989-Oct-26 by Chernykh, N. S. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1989 UE8 = 1935 ME = 1955 KP = 1978 EM3 = 1984 BM = 1988 GC = 1989 VS 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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