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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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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
(2017-Dec-26.99505861)
0.00013603 TDB
period 1222.412379056417
3.35
4.4993e-06
1.232e-08
d
yr
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] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
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) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.181   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

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 ]
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