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JPL Small-Body Database Browser
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842 Kerstin (A916 TB)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000842
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1164937859959758 5.3446e-08  
a 3.236791746790609 1.962e-08 au
q 2.859725621726443 1.7364e-07 au
i 14.4958813696372 6.06e-06 deg
node 5.400752896593601 1.5232e-05 deg
peri 352.4904701012294 2.2275e-05 deg
M 350.4443988407981 1.6924e-05 deg
tp 2459056.958076473315
(2020-Jul-26.45807647)
0.00010012 TDB
period 2127.015055543712
5.82
1.934e-05
5.295e-08
d
yr
n .1692512702539268 1.5389e-09 deg/d
Q 3.613857871854774 2.1906e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3094  
   data-arc span      37664 days (103.12 yr)  
   first obs. used      1916-10-01  
   last obs. used      2019-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37206  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:42:33  

Additional Information
 Earth MOID = 1.85708 au 
 Jupiter MOID = 1.83946 au 
 T_jup = 3.124 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.6   n/a MPO250201  
diameter diameter 43.576 km 0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 18.716 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.051   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

842 Kerstin (A916 TB)          Discovered 1916-Oct-01 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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