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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09499954241632337 7.6364e-08  
a 3.169581475953331 2.191e-08 AU
q 2.86847268608651 2.4102e-07 AU
i 15.66499800571908 8.4068e-06 deg
node 70.83445498758563 2.7676e-05 deg
peri 293.3369211137236 4.7893e-05 deg
M 258.4422440341352 4.2084e-05 deg
tp 2457381.949367257282
(2015-Dec-25.44936726)
0.00024359 JED
period 2061.110648043249
5.64
2.1372e-05
5.851e-08
d
yr
n .1746631120176747 1.8111e-09 deg/d
Q 3.470690265820153 2.3992e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1187  
   data-arc span      35815 days (98.06 yr)  
   first obs. used      1916-02-21  
   last obs. used      2014-03-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55488  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:36:29  

Additional Information
 Earth MOID = 1.91135 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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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 (024)
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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