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2615 Saito (1951 RJ)
Classification: Main-belt Asteroid          SPK-ID: 2002615
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1513832228837826 3.6181e-08  
a 3.178977055841295 1.9074e-08 au
q 2.697733263654441 1.1001e-07 au
i 4.245777699784786 3.6918e-06 deg
node 322.6167655898856 4.9609e-05 deg
peri 343.8323173764563 5.1305e-05 deg
M 134.3738270679291 1.4874e-05 deg
tp 2458427.745215612994
(2018-Nov-05.24521561)
8.2851e-05 TDB
period 2070.282051568642
5.67
1.8632e-05
5.101e-08
d
yr
n .1738893498725113 1.565e-09 deg/d
Q 3.660220848028148 2.1961e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2379  
   data-arc span      25340 days (69.38 yr)  
   first obs. used      1951-09-04  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46672  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:04:23  

Additional Information
 Earth MOID = 1.68119 au 
 Jupiter MOID = 1.59894 au 
 T_jup = 3.178 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456941.5 (2014-Oct-11.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1565930291359459 3.6496e-08  
q 2.675645415309104 1.1171e-07 au
tp 2456358.228444755771
(2013-Mar-06.72844476)
7.5711e-05 TDB
node 322.9269848583763 4.9297e-05 deg
peri 343.2087571950182 5.0883e-05 deg
i 4.265888979387661 3.7047e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2379  
   data-arc span      25340 days (69.38 yr)  
   first obs. used      1951-09-04  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46672  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:04:23  

Additional Information
 Jupiter MOID = 1.59894 au 
 T_jup = 3.178 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.331983270456422E-15 -4.041342609750393E-15 1.094922143765611E-12 1.212461532546356E-14 1.409382316443736E-13 -2.360763040637992E-16
q -4.041342609750393E-15 1.248015638927156E-14 -3.350389545410726E-12 -3.887741682019741E-14 -4.185360745866924E-13 9.65601243003716E-16
tp 1.094922143765611E-12 -3.350389545410726E-12 5.732148683180221E-9 1.368352008125068E-11 9.707606616688624E-10 -1.295057513548433E-12
node 1.212461532546356E-14 -3.887741682019741E-14 1.368352008125068E-11 2.430193532194646E-9 -2.420936020842992E-9 4.937724502547395E-11
peri 1.409382316443736E-13 -4.185360745866924E-13 9.707606616688624E-10 -2.420936020842992E-9 2.589122982803502E-9 -4.947131091458861E-11
i -2.360763040637992E-16 9.65601243003716E-16 -1.295057513548433E-12 4.937724502547395E-11 -4.947131091458861E-11 1.37246606393165E-11

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 12.57   n/a E2021B10  
diameter diameter 15.555 km 0.244 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 14.960 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.088   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2615 Saito (1951 RJ)          Discovered 1951-Sep-04 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1951 RJ = 1955 FC2 = 1967 JS = 1979 OD13 = 1979 QB8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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