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857 Glasenappia (A916 GR)
Classification: Main-belt Asteroid          SPK-ID: 2000857
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 76 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08882777116107897 3.6082e-08  
a 2.190414337992152 4.745e-09 au
q 1.995844714429038 8.0502e-08 au
i 5.300801561855124 3.2658e-06 deg
node 82.91548577361876 3.8268e-05 deg
peri 239.0021519338554 4.1841e-05 deg
M 298.4959433482017 1.769e-05 deg
tp 2459202.796839677263
5.8327e-05 TDB
period 1184.098517210332
n .3040287567018826 9.8791e-10 deg/d
Q 2.384983961555265 5.1665e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3138  
   data-arc span      41837 days (114.54 yr)  
   first obs. used      1906-03-27  
   last obs. used      2020-10-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41291  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:25:04  

Additional Information
 Earth MOID = .988838 au 
 Jupiter MOID = 2.82327 au 
 T_jup = 3.662 
[ 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 11.6   n/a MPO473774 IRAS observations used: 7
diameter diameter 14.497 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 8.20 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Lagerkvist, C.-I.; Bel'skaya, I.; Erikson, A.; Schevchenko, V.; et al. (1998) Astron. Astrophys. Suppl. Ser. 131, 55-62.]
[Angeli, C.A.; Guimaraes, T.A.; Lazzaro, D.; Duffard, R.; et al. (2001) Astron. J. 121, 2245-2252.]
[Behrend, R. (2006) Observatoire de Geneve web site,]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Mansego, E.A.; Rodriguez, P.B.; de Haro, J.L.; Chiner, O.R.; et al. (2016) Minor Planet Bull. 43, 332-336.]
[Baxter, N.; Vent, A.; Montgomer, K.; Davis, C.; et al. (2019) Minor Planet Bull. 46, 111-114.]
geometric albedo albedo 0.271   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.630   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=11.45 deg.
U-B UB 0.140   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=11.45 deg.
Tholen spectral type spec_T MU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo

857 Glasenappia (A916 GR)          Discovered 1916-Apr-06 by Belyavskij, S. at Simeis
Discovered at Simeis during the First World War while Simeis was not in communication with the Rechen-Institut for long periods of time were given provisional designations containing the Greek letter SIGMA. These are here abbreviated S.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A916 GR = 1953 YC = 1958 HK = A906 FF = A913 MF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Nov-27 02:55 UT
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