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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 | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1201918360466698 3.9344e-08  
a 3.047920819874043 1.2611e-08 au
q 2.68158562040851 1.1905e-07 au
i 9.050596719160085 4.4429e-06 deg
node 30.68147322691388 2.0272e-05 deg
peri 9.634968564390329 2.4826e-05 deg
M 169.172822351597 1.546e-05 deg
tp 2458087.160917780958
(2017-Nov-29.66091778)
8.1106e-05 TDB
period 1943.58683048685
5.32
1.2063e-05
3.303e-08
d
yr
n .1852245520257119 1.1496e-09 deg/d
Q 3.414256019339575 1.4127e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2849  
   data-arc span      41920 days (114.77 yr)  
   first obs. used      1905-10-26  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42293  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:25:22  

Additional Information
 Earth MOID = 1.68983 au 
 Jupiter MOID = 2.02017 au 
 T_jup = 3.208 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456606.5 (2013-Nov-10.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1204048718180065 3.9274e-08  
q 2.682331415832301 1.1907e-07 au
tp 2456147.682805141082
(2012-Aug-08.18280514)
7.747e-05 TDB
node 30.71921441922276 2.0272e-05 deg
peri 10.61069419091108 2.4838e-05 deg
i 9.049612393330161 4.4421e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2849  
   data-arc span      41920 days (114.77 yr)  
   first obs. used      1905-10-26  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42293  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:25:22  

Additional Information
 Jupiter MOID = 2.02017 au 
 T_jup = 3.208 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.54240822949344E-15 -4.656186522643898E-15 -4.50876430081696E-13 6.436039693918425E-17 -1.159102715695633E-13 -1.31845114778136E-16
q -4.656186522643898E-15 1.417661503012725E-14 1.570276774624886E-12 -1.144343713270275E-15 3.915379042468482E-13 7.307988254247942E-16
tp -4.50876430081696E-13 1.570276774624886E-12 6.001584796760284E-9 -2.197971656090677E-12 1.119854967501237E-9 -2.02814293497557E-12
node 6.436039693918425E-17 -1.144343713270275E-15 -2.197971656090677E-12 4.109480979259804E-10 -4.059823066260156E-10 -1.015608565356931E-11
peri -1.159102715695633E-13 3.915379042468482E-13 1.119854967501237E-9 -4.059823066260156E-10 6.16929408744902E-10 9.737551528812312E-12
i -1.31845114778136E-16 7.307988254247942E-16 -2.02814293497557E-12 -1.015608565356931E-11 9.737551528812312E-12 1.973224489525023E-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 10.8   n/a MPO473775  
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. 2019-August); 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

[ show close-approach data ]
Alternate Designations
 A921 UL = A905 UL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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