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1834 Palach (1969 QP)
Classification: Main-belt Asteroid          SPK-ID: 2001834
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 .07037840621902353 3.6193e-08  
a 3.02394874742989 1.6291e-08 au
q 2.811128054097762 1.1205e-07 au
i 9.437545395799017 4.0618e-06 deg
node 268.1541642778687 2.9648e-05 deg
peri 358.9816339083131 4.6501e-05 deg
M 289.0478840385823 3.6979e-05 deg
tp 2459379.049709211987
(2021-Jun-13.54970921)
0.00019773 TDB
period 1920.702342272926
5.26
1.5521e-05
4.249e-08
d
yr
n .1874314369679907 1.5146e-09 deg/d
Q 3.236769440762019 1.7437e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2204  
   data-arc span      18427 days (50.45 yr)  
   first obs. used      1969-08-22  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4397  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:06:03  

Additional Information
 Earth MOID = 1.79514 au 
 Jupiter MOID = 1.85212 au 
 T_jup = 3.221 
[ 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 11.3   n/a MPO337261  
diameter diameter 17.156 km 0.414 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.139 h n/a LCDB (Rev. 2019-August); 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:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pligge, Z.; Monnier, A.; Pharo, J.; Stolze, K.; Yim, A.; Ditteon, R. (2011) Minor Planet Bull. 38, 5-7.]
geometric albedo albedo 0.151   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1834 Palach (1969 QP)          Discovered 1969-Aug-22 by Kohoutek, L. at Bergedorf
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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