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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09476951408357195 4.4207e-08  
a 3.169844612240107 1.8664e-08 au
q 2.869439978617684 1.4099e-07 au
i 15.66260238724184 5.2112e-06 deg
node 70.81993070767761 1.8543e-05 deg
peri 293.1698130450338 3.0072e-05 deg
M 3.372750207260379 2.488e-05 deg
tp 2457381.187563723010
(2015-Dec-24.68756372)
0.00014243 JED
period 2061.367321170105
5.64
1.8206e-05
4.985e-08
d
yr
n .1746413636729485 1.5424e-09 deg/d
Q 3.470249245862531 2.0433e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1464  
   data-arc span      36456 days (99.81 yr)  
   first obs. used      1916-02-21  
   last obs. used      2015-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54452  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:35:31  

Additional Information
 Earth MOID = 1.91204 au 
 Jupiter MOID = 2.02575 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 9.3 mag n/a MPO358633  
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-December); 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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