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1384 Kniertje (1934 RX)
Classification: Main-belt Asteroid          SPK-ID: 2001384
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1825521460571786 4.5665e-08  
a 2.677112679198244 1.5075e-08 AU
q 2.188400014373721 1.2401e-07 AU
i 11.85662950645439 6.1948e-06 deg
node 152.8605610932046 2.7006e-05 deg
peri 276.5097026656965 3.1862e-05 deg
M 62.60044673283955 1.6567e-05 deg
tp 2456722.289616447680
(2014-Mar-05.78961645)
7.3429e-05 JED
period 1599.920500667843
4.38
1.3514e-05
3.7e-08
d
yr
n .2250111801490936 1.9005e-09 deg/d
Q 3.165825344022767 1.7827e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1302  
   data-arc span      29011 days (79.43 yr)  
   first obs. used      1934-09-09  
   last obs. used      2014-02-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56467  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:59:01  

Additional Information
 Earth MOID = 1.23963 AU 
 T_jup = 3.324 
[ 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 11.5 mag n/a MPO265963  
diameter diameter 27.51 km 1.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
rotation period rot_per 9.807 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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 Bul. 35, 1-4.]
geometric albedo albedo 0.3077   0.039 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8

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 | Physical Parameters | Discovery Circumstances ]
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