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JPL Small-Body Database Browser
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1156 Kira (1928 DA)
Classification: Main-belt Asteroid          SPK-ID: 2001156
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04620228554651148 3.2573e-08  
a 2.237413263376649 5.4901e-09 au
q 2.134039656896569 7.2314e-08 au
i 1.397554695509721 3.5058e-06 deg
node 91.13310900794353 0.00014487 deg
peri 354.0527631366855 0.00015022 deg
M 143.1282780660203 4.0138e-05 deg
tp 2458114.495058608521
0.00013603 TDB
period 1222.412379056417
n .294499635448624 1.0839e-09 deg/d
Q 2.340786869856729 5.7437e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2602  
   data-arc span      33417 days (91.49 yr)  
   first obs. used      1928-02-22  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42105  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:15:28  

Additional Information
 Earth MOID = 1.15009 au 
 Jupiter MOID = 2.73062 au 
 T_jup = 3.635 
[ 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 12.3   n/a MPO267711  
diameter diameter 6.831 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 2.9710 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2012)]
geometric albedo albedo 0.181   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

1156 Kira (1928 DA)          Discovered 1928-Feb-22 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1928 DA = 1935 FY = 1938 DA = 1953 RC1 = 1955 FW1 = 1973 QC2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2019-Dec-16 14:01 UT
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