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JPL Small-Body Database Browser
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4191 Assesse (1980 KH)
Classification: Main-belt Asteroid          SPK-ID: 2004191
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1464075589640188 3.1202e-08  
a 2.630731557867273 1.0672e-08 au
q 2.245572572190315 8.1401e-08 au
i 12.07136566900997 4.031e-06 deg
node 231.7279617320909 2.0543e-05 deg
peri 39.64363851071659 2.7541e-05 deg
M 14.24524676498649 1.699e-05 deg
tp 2458538.829040598538
(2019-Feb-24.32904060)
7.3622e-05 TDB
period 1558.52304637471
4.27
9.4833e-06
2.596e-08
d
yr
n .2309879220826399 1.4055e-09 deg/d
Q 3.015890543544231 1.2234e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2176  
   data-arc span      14433 days (39.52 yr)  
   first obs. used      1980-05-22  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42424  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:59:23  

Additional Information
 Earth MOID = 1.24341 au 
 Jupiter MOID = 2.08296 au 
 T_jup = 3.354 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7   n/a MPO435738  
diameter diameter 7.431 km 0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.6489 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Angeli, C.A.; Guimaraes, T.A.; Lazzaro, D.; Duffard, R.; et al. (2001) Astron. J. 121, 2245-2252.]
[Alvarez, E.M. (2010) Minor Planet Bull. 37, 142-143.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.292   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4191 Assesse (1980 KH)          Discovered 1980-May-22 by Debehogne, H. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1980 KH = 1984 DG1 = 1988 BD5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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