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15922 Masajisaito (1997 VR)
Classification: Main-belt Asteroid          SPK-ID: 2015922
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1892730609223826 3.1087e-08  
a 2.261001674513523 6.73e-09 au
q 1.833054966827716 7.1798e-08 au
i 2.988364827557264 3.3706e-06 deg
node 172.7947877413339 6.644e-05 deg
peri 194.5353384635991 6.7002e-05 deg
M 256.9437423708537 9.7463e-06 deg
tp 2459355.985277947024
(2021-May-21.48527795)
3.4342e-05 TDB
period 1241.794559641908
3.40
5.5444e-06
1.518e-08
d
yr
n .28990302558888 1.2944e-09 deg/d
Q 2.68894838219933 8.0038e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1314  
   data-arc span      10913 days (29.88 yr)  
   first obs. used      1990-08-29  
   last obs. used      2020-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54493  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:30:34  

Additional Information
 Earth MOID = .831914 au 
 Jupiter MOID = 2.77203 au 
 T_jup = 3.594 
[ 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 15.6   n/a MPO332967  
diameter diameter 3.251 km 0.750 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.105   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

15922 Masajisaito           Discovered 1997 Nov. 1 by K. Endate and K. Watanabe at Kitami.
Amateur astronomer Masaji Saito (b. 1955) makes his living constructing and restoring traditional Japanese structures, shrines and temples. Active in astronomical education and popularization in his native area, he is also a free-lance photographer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080321/MPCPages.arcLast Updated: 2008-03-26

Alternate Designations
 1997 VR = 1990 QS18 = 1990 UW6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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