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964 Subamara (A921 UL)
Classification: Main-belt Asteroid          SPK-ID: 2000964
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1201347293654309 3.8218e-08  
a 3.048645121104293 1.2101e-08 au
q 2.682396964549188 1.1623e-07 au
i 9.049773857327834 4.3308e-06 deg
node 30.6749041574284 2.0014e-05 deg
peri 9.431871666829153 2.4517e-05 deg
M 242.7649717947648 1.5583e-05 deg
tp 2460029.660229669004
(2023-Mar-26.16022967)
8.6091e-05 TDB
period 1944.279676222767
5.32
1.1576e-05
3.169e-08
d
yr
n .1851585470971887 1.1024e-09 deg/d
Q 3.414893277659399 1.3554e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2967  
   data-arc span      42291 days (115.79 yr)  
   first obs. used      1905-10-26  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41769  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:12:03  

Additional Information
 Earth MOID = 1.68996 au 
 Jupiter MOID = 2.02197 au 
 T_jup = 3.208 
[ 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 10.81   n/a MPO636075  
diameter diameter 19.835 km 0.536 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.868 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Folberth, J.; Casimir, S.; Dou, Y.; Evans, D; et al. (2012) Minor Planet Bull. 39, 51-55.]
[Alkema, M.S. (2013) Minor Planet Bull. 40, 133-137.]
[Polakis, T. (2018) Minor Planet Bull. 45, 199-203.]
geometric albedo albedo 0.236   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

964 Subamara (A921 UL)          Discovered 1921-Oct-27 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A921 UL = A905 UL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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