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891 Gunhild (A918 KB)
Classification: Main-belt Asteroid          SPK-ID: 2000891
[ 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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02873565569497551 3.5091e-08  
a 2.862168104642692 1.0312e-08 au
q 2.779921827446539 1.0051e-07 au
i 13.55872369394289 3.7514e-06 deg
node 105.8546522374133 1.6015e-05 deg
peri 292.3815812995718 6.7794e-05 deg
M 232.5691224202337 6.734e-05 deg
tp 2459626.556179587330
(2022-Feb-16.05617959)		 0.0003323 TDB
period 1768.646884742361
4.84		 9.5583e-06
2.617e-08		 d
yr
n .2035454352734979 1.1e-09 deg/d
Q 2.944414381838845 1.0608e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2791  
   data-arc span      37432 days (102.48 yr)  
   first obs. used      1918-05-18  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38686  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:56:57  

Additional Information
 Earth MOID = 1.81999 au 
 Jupiter MOID = 2.24689 au 
 T_jup = 3.259 
[ 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 10.0   n/a MPO347520  
diameter diameter 55.747 km 0.321 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.892 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Garceran, A.C.; Aznar, A.; Mansego, E.A.; Rodriguez, P.B.; et al. (2016) Minor Planet Bull. 43, 92-97.]
geometric albedo albedo 0.065   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

891 Gunhild (A918 KB)          Discovered 1918-May-17 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A918 KB = 1977 FH = 1999 CF154 = A915 VE 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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