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952 Caia (A916 US)
Classification: Main-belt Asteroid          SPK-ID: 2000952
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 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2436253828113499 3.8054e-08  
a 2.991385221998977 1.1372e-08 au
q 2.262607852153261 1.144e-07 au
i 9.990601578353417 4.5644e-06 deg
node 18.41898042298374 2.0513e-05 deg
peri 356.4947032200035 2.1701e-05 deg
M 28.04249928546718 7.4813e-06 deg
tp 2458853.295475303381
(2020-Jan-04.79547530)
3.9186e-05 TDB
period 1889.761263834514
5.17
1.0776e-05
2.95e-08
d
yr
n .1905002535979196 1.0863e-09 deg/d
Q 3.720162591844693 1.4142e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3043  
   data-arc span      37999 days (104.04 yr)  
   first obs. used      1916-10-27  
   last obs. used      2020-11-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42022  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:57:20  

Additional Information
 Earth MOID = 1.26397 au 
 Jupiter MOID = 1.74345 au 
 T_jup = 3.188 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456415.5 (2013-May-03.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2470748967265486 3.8909e-08  
q 2.250567459490405 1.1777e-07 au
tp 2456951.083786303139
(2014-Oct-20.58378630)
3.7127e-05 TDB
node 18.616529434109 2.0415e-05 deg
peri 354.6055667645751 2.1566e-05 deg
i 10.0337503931585 4.5755e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3043  
   data-arc span      37999 days (104.04 yr)  
   first obs. used      1916-10-27  
   last obs. used      2020-11-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42022  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:57:20  

Additional Information
 Jupiter MOID = 1.74345 au 
 T_jup = 3.188 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.513927010907221E-15 -4.571480212343841E-15 -1.408663231077752E-13 -4.428253360006769E-16 -3.160454666939974E-14 2.422807116773077E-16
q -4.571480212343841E-15 1.386971356798959E-14 4.144324708916967E-13 1.455843056263312E-15 8.786771718065267E-14 -6.755100967260104E-16
tp -1.408663231077752E-13 4.144324708916967E-13 1.378407893017424E-9 -5.516344907006834E-12 2.71367809873428E-10 1.018051228045058E-12
node -4.428253360006769E-16 1.455843056263312E-15 -5.516344907006834E-12 4.167657098617066E-10 -4.108494658172988E-10 -6.268410973070579E-12
peri -3.160454666939974E-14 8.786771718065267E-14 2.71367809873428E-10 -4.108494658172988E-10 4.651032512436692E-10 6.291755406343989E-12
i 2.422807116773077E-16 -6.755100967260104E-16 1.018051228045058E-12 -6.268410973070579E-12 6.291755406343989E-12 2.09351663788606E-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 9.3   n/a MPO435704  
diameter diameter 88.692 km 0.422 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.50 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1980) Icarus 43, 20-32.]
[Stanzel, R.; Schober, H.J. (1980) Astron. Astrophys. Suppl. Ser. 39, 3-5.]
[Colazo, L.M.; Fornari, C.; Santucho, M.; Mottino, A.; et al. (2020) Minor Planet Bull. 47, 337-339.]
geometric albedo albedo 0.047   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

952 Caia (A916 US)          Discovered 1916-Oct-27 by Neujmin, G. at Simeis
Discovered at Simeis during the First World War while Simeis was not in communication with the Rechen-Institut for long periods of time were given provisional designations containing the Greek letter SIGMA. These are here abbreviated S.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A916 US = 1973 WH = A908 EB = A919 GB = A921 RA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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