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 ]  
1246 Chaka (1932 OA)
Classification: Main-belt Asteroid          SPK-ID: 2001246
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3108958449768613 1.2452e-08  
a 2.618737782080049 7.5216e-09 au
q 1.804583086547441 3.4199e-08 au
i 16.0046756558799 4.672e-07 deg
node 290.5244322670275 3.0474e-06 deg
peri 54.84768512246478 4.1733e-06 deg
M 268.4298240367273 5.8584e-06 deg
tp 2459594.220470990958
(2022-Jan-14.72047099)
2.6275e-05 TDB
period 1547.877003246057
4.24
6.6688e-06
1.826e-08
d
yr
n .2325766189723363 1.002e-09 deg/d
Q 3.432892477612658 9.8601e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2842  
   data-arc span      32403 days (88.71 yr)  
   first obs. used      1932-07-04  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .373  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:19:20  

Additional Information
 Earth MOID = .841425 au 
 Jupiter MOID = 2.15159 au 
 T_jup = 3.283 
[ 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 10.94   n/a MPCxxxxx  
diameter diameter 17.634 km 0.498 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 25.462 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Garlitz, J. (2013) Posting on CALL web site. http://www.minorplanet.info/call.html]
[Ferrero, A. (2014) Minor Planet Bull. 41, 184-185.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.195   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1246 Chaka (1932 OA)          Discovered 1932-Jul-23 by Jackson, C. at Johannesburg (UO)
Subsequently reported as discovered on July 4.
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-21 05:51 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin