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4258 Ryazanov (1987 RZ2)
Classification: Main-belt Asteroid          SPK-ID: 2004258
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 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06827006576095533 1.0978e-08  
a 2.959472663309153 1.1535e-08 au
q 2.757429269967288 3.6447e-08 au
i 3.95318273319063 2.1427e-07 deg
node 62.19184138352803 6.7968e-06 deg
peri 277.431939987798 1.8396e-05 deg
M 199.0086962532518 1.9326e-05 deg
tp 2460032.110267331831
(2023-Mar-28.61026733)
0.00010115 TDB
period 1859.601663394233
5.09
1.0872e-05
2.977e-08
d
yr
n .1935898461947549 1.1318e-09 deg/d
Q 3.161516056651019 1.2322e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3140  
   data-arc span      19060 days (52.18 yr)  
   first obs. used      1969-01-15  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43228  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:30:13  

Additional Information
 Earth MOID = 1.75033 au 
 Jupiter MOID = 2.11332 au 
 T_jup = 3.259 
[ 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 12.21   n/a MPCxxxxx  
diameter diameter 9.223 km 0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.329   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4258 Ryazanov (1987 RZ2)          Discovered 1987-Sep-01 by Karachkina, L. G. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1987 RZ2 = 1969 AW = 1972 TA4 = 1980 DJ5 = 1980 FD10 = 1982 TF3 = 1988 XZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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