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818 Kapteynia (1916 YZ)
Classification: Main-belt Asteroid          SPK-ID: 2000818
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09491078798640531 4.7346e-08  
a 3.169928650428886 2.0897e-08 AU
q 2.869068224355998 1.4826e-07 AU
i 15.66349341057407 5.6467e-06 deg
node 70.83246566425298 1.9402e-05 deg
peri 293.2677628468113 3.2365e-05 deg
M 293.4329179155719 2.8405e-05 deg
tp 2457381.679623879452
(2015-Dec-25.17962388)
0.00016412 JED
period 2061.449297455435
5.64
2.0385e-05
5.581e-08
d
yr
n .174634418825808 1.7269e-09 deg/d
Q 3.470789076501774 2.2881e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1274  
   data-arc span      36196 days (99.10 yr)  
   first obs. used      1916-02-21  
   last obs. used      2015-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56432  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:02:08  

Additional Information
 Earth MOID = 1.91319 AU 
 T_jup = 3.138 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.2 mag n/a MPO263351  
diameter diameter 49.45 km 3.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6
rotation period rot_per 16.35 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2002) Minor Planet Bul. 29, 72-73.]
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1655   0.029 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6

818 Kapteynia (1916 YZ)          Discovered 1916-Feb-21 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1916 YZ = 1929 JC 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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