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JPL Small-Body Database Browser
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782 Montefiore (A914 FA)
Classification: Main-belt Asteroid          SPK-ID: 2000782
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03859689847193341 3.6383e-08  
a 2.179651147059596 4.6461e-09 au
q 2.095523373032303 7.9894e-08 au
i 5.261318039485737 2.9795e-06 deg
node 80.47225943948703 4.1787e-05 deg
peri 81.03163660782319 5.9152e-05 deg
M 20.4517715963057 4.1487e-05 deg
tp 2458933.726007258290
(2020-Mar-25.22600726)
0.00013546 TDB
period 1175.381666757803
3.22
3.7581e-06
1.029e-08
d
yr
n .3062834908706987 9.793e-10 deg/d
Q 2.263778921086888 4.8254e-09 au
  Orbit Determination Parameters
   # obs. used (total)      4208  
   data-arc span      38214 days (104.62 yr)  
   first obs. used      1915-09-14  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .34571  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:12:42  

Additional Information
 Earth MOID = 1.11067 au 
 Jupiter MOID = 2.7095 au 
 T_jup = 3.675 
[ 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 11.3   n/a MPO416711  
diameter diameter 14.158 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.0728 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Galad, A. (2008) Minor Planet Bull. 35, 17-21.]
[Han, X.L.; Li, B.; Zhao, H.; Liu. W.; et al. (2013) Minor Planet Bull. 40, 99-100.]
[Schmidt, R.E. (2015) Minor Planet Bull. 42, 1-3.]
[Benishek, V. (2016) Minor Planet Bull. 43, 186-188.]
geometric albedo albedo 0.224   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a medium resolution spectrum published by Chapman and Gaffey (1979)
SMASSII spectral type spec_B Sl   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

782 Montefiore (A914 FA)          Discovered 1914-Mar-18 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A914 FA = A911 KA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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