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1384 Kniertje (1934 RX)
Classification: Main-belt Asteroid          SPK-ID: 2001384
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1823282015579724 3.0075e-08  
a 2.675515633268013 8.3595e-09 au
q 2.187693679614017 8.0019e-08 au
i 11.85805624720211 3.4254e-06 deg
node 152.8510971941917 1.6452e-05 deg
peri 276.0129938160302 1.9396e-05 deg
M 153.4926293668384 1.1748e-05 deg
tp 2458318.954756451100
(2018-Jul-19.45475645)		 5.0711e-05 TDB
period 1598.489052469203
4.38		 7.4916e-06
2.051e-08		 d
yr
n .2252126778371764 1.0555e-09 deg/d
Q 3.16333758692201 9.8837e-09 au
   Orbit Determination Parameters
   # obs. used (total)      3022  
   data-arc span      31327 days (85.77 yr)  
   first obs. used      1934-09-09  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45762  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:30:40  

Additional Information
 Earth MOID = 1.2393 au 
 Jupiter MOID = 2.23287 au 
 T_jup = 3.325 
[ 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 11.7   n/a MPO473782  
diameter diameter 26.517 km 0.090 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 9.807 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. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hawkins, S.; Ditteon, R. (2008) Minor Planet Bull. 35, 1-4.]
[Vinson, R.; Moore, R.; Ditteon, R. (2014) Minor Planet Bull. 41, 169-170.]
geometric albedo albedo 0.064   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1384 Kniertje (1934 RX)          Discovered 1934-Sep-09 by Van Gent, H. at Johannesburg (LS)
Reference: DISCOVERY.DBLast Updated: 2003-08-29
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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