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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09467712155501828 4.4185e-08  
a 3.169389411948361 1.8561e-08 au
q 2.869320745338138 1.4095e-07 au
i 15.66387338493976 5.1855e-06 deg
node 70.81558985128665 1.8531e-05 deg
peri 293.0961028870838 2.9938e-05 deg
M 38.37395814981078 2.4669e-05 deg
tp 2457380.817264498397
(2015-Dec-24.31726450)
0.00014078 JED
period 2060.923308245362
5.64
1.8104e-05
4.957e-08
d
yr
n .1746789890529688 1.5345e-09 deg/d
Q 3.469458078558585 2.0318e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1477  
   data-arc span      36496 days (99.92 yr)  
   first obs. used      1916-02-21  
   last obs. used      2016-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54286  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 17:42:15  

Additional Information
 Earth MOID = 1.91242 au 
 Jupiter MOID = 2.0269 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. 2016-February); 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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