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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04659741398334261 1.9518e-08  
a 2.237022373900089 4.5025e-09 au
q 2.132782916253467 4.4282e-08 au
i 1.39730455050592 1.6411e-06 deg
node 91.13124838284595 3.1567e-05 deg
peri 355.0683407281343 3.7044e-05 deg
M 16.54598614790074 1.433e-05 deg
tp 2459340.331338575324
(2021-May-05.83133858)
4.8603e-05 TDB
period 1222.092048919594
3.35
3.6896e-06
1.01e-08
d
yr
n .2945768285770802 8.8936e-10 deg/d
Q 2.341261831546712 4.7123e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3444  
   data-arc span      34019 days (93.14 yr)  
   first obs. used      1928-02-22  
   last obs. used      2021-04-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38391  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 12:02:01  

Additional Information
 Earth MOID = 1.14895 au 
 Jupiter MOID = 2.72613 au 
 T_jup = 3.636 
[ 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 12.47   n/a MPCxxxxx  
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. 2020-October); 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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