Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1514644147683472 3.6278e-08  
a 3.178178500607385 1.9244e-08 au
q 2.696797553983544 1.1053e-07 au
i 4.245688803191101 3.8307e-06 deg
node 322.6196890415001 5.0925e-05 deg
peri 343.7332668300393 5.2684e-05 deg
M 99.69571233043172 1.4966e-05 deg
tp 2458427.387560410418
(2018-Nov-04.88756041)
8.4247e-05 TDB
period 2069.502021996898
5.67
1.8797e-05
5.146e-08
d
yr
n .1739548916471363 1.58e-09 deg/d
Q 3.659559447231226 2.2159e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2192  
   data-arc span      24988 days (68.41 yr)  
   first obs. used      1951-09-04  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4787  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:26:28  

Additional Information
 Earth MOID = 1.68224 au 
 Jupiter MOID = 1.59965 au 
 T_jup = 3.178 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456844.5 (2014-Jul-06.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1566675909493925 3.6633e-08  
q 2.675390127421673 1.1245e-07 au
tp 2456358.276156294219
(2013-Mar-06.77615629)
7.758e-05 TDB
node 322.9274848388639 5.0592e-05 deg
peri 343.2070777090446 5.2234e-05 deg
i 4.265882747214189 3.8444e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2192  
   data-arc span      24988 days (68.41 yr)  
   first obs. used      1951-09-04  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4787  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:26:28  

Additional Information
 Jupiter MOID = 1.59965 au 
 T_jup = 3.178 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.341962637731785E-15 -4.082124384312139E-15 1.145202062893514E-12 1.166545714749408E-14 1.51026124473162E-13 -2.973045630320094E-16
q -4.082124384312139E-15 1.264458421992503E-14 -3.556399700269913E-12 -3.739600856204652E-14 -4.595616334899184E-13 1.18327360436184E-15
tp 1.145202062893514E-12 -3.556399700269913E-12 6.018624179892388E-9 1.354826885355957E-11 1.026001357375309E-9 -1.416527567093111E-12
node 1.166545714749408E-14 -3.739600856204652E-14 1.354826885355957E-11 2.559600930876575E-9 -2.549985347799591E-9 6.086003872277788E-11
peri 1.51026124473162E-13 -4.595616334899184E-13 1.026001357375309E-9 -2.549985347799591E-9 2.728409959913111E-9 -6.094314256894101E-11
i -2.973045630320094E-16 1.18327360436184E-15 -1.416527567093111E-12 6.086003872277788E-11 -6.094314256894101E-11 1.477961551713563E-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 12.5   n/a MPO319116  
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. 2019-August); 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-14 06:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin