Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2436253956985637 4.2755e-08  
a 2.991385219133395 1.2127e-08 au
q 2.262607811435187 1.2988e-07 au
i 9.990600436300861 5.0219e-06 deg
node 18.41898171183163 2.0661e-05 deg
peri 356.4947024108911 2.184e-05 deg
M 28.04250004103673 7.5935e-06 deg
tp 2458853.295471548662
(2020-Jan-04.79547155)
3.9725e-05 TDB
period 1889.761261119084
5.17
1.1492e-05
3.146e-08
d
yr
n .1905002538716527 1.1584e-09 deg/d
Q 3.720162626831603 1.5082e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2863  
   data-arc span      37904 days (103.78 yr)  
   first obs. used      1916-10-27  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42965  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:25:22  

Additional Information
 Earth MOID = 1.26397 au 
 Jupiter MOID = 1.74345 au 
 T_jup = 3.188 
[ 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 9.3   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 7.51 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
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.]
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-25 04:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin