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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 ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 53 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2438910077049688 1.2344e-08  
a 2.9923924098241 9.153e-09 au
q 2.2625748095434 3.5548e-08 au
i 9.990562769149129 3.8224e-07 deg
node 18.40402751797338 7.5091e-07 deg
peri 356.5580191283149 3.7554e-06 deg
M 103.38527645406 3.0011e-06 deg
tp 2458853.521746538971
(2020-Jan-05.02174654)
1.4284e-05 TDB
period 1890.715757120694
5.18
8.6748e-06
2.375e-08
d
yr
n .1904040830273883 8.736e-10 deg/d
Q 3.722210010104799 1.1385e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3584  
   data-arc span      38222 days (104.65 yr)  
   first obs. used      1916-10-27  
   last obs. used      2021-06-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40003  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:10:57  

Additional Information
 Earth MOID = 1.26316 au 
 Jupiter MOID = 1.74338 au 
 T_jup = 3.187 
[ show covariance matrix ]

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 9.40   n/a E2021B10  
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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