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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1827623793650312 4.223e-08  
a 2.675344469352487 1.2285e-08 au
q 2.18639214851255 1.1196e-07 au
i 11.85833085847793 6.0647e-06 deg
node 152.8606180575863 2.3228e-05 deg
peri 276.2560060532163 2.8599e-05 deg
M 197.9769234437445 1.6541e-05 deg
tp 2458319.853503634225
(2018-Jul-20.35350363)
7.4417e-05 JED
period 1598.33566188583
4.38
1.1009e-05
3.014e-08
d
yr
n .225234291259726 1.5514e-09 deg/d
Q 3.164296790192425 1.4531e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1567  
   data-arc span      29804 days (81.60 yr)  
   first obs. used      1934-09-09  
   last obs. used      2016-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54687  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:33:37  

Additional Information
 Earth MOID = 1.23646 au 
 Jupiter MOID = 2.23686 au 
 T_jup = 3.325 
[ 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 11.6 mag n/a MPO319099  
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 LCDB (Rev. 2016-February); 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 Bul. 35, 1-4.]
[Vinson, R.; Moore, R.; Ditteon, R. (2014) Minor Planet Bul. 41, 169-170.]
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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