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862 Franzia (A917 BG)
Classification: Main-belt Asteroid          SPK-ID: 2000862
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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08226916509385 3.6939e-08  
a 2.803841239525464 1.0268e-08 au
q 2.573171561693999 1.0351e-07 au
i 13.88716759407603 4.7314e-06 deg
node 300.0100979447289 1.7513e-05 deg
peri 120.9656148922598 3.4975e-05 deg
M 53.87149336381414 2.9127e-05 deg
tp 2458743.883209146109
(2019-Sep-17.38320915)
0.00013886 TDB
period 1714.859547024446
4.70
9.4198e-06
2.579e-08
d
yr
n .2099297290117183 1.1532e-09 deg/d
Q 3.03451091735693 1.1112e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2573  
   data-arc span      43026 days (117.80 yr)  
   first obs. used      1903-01-18  
   last obs. used      2020-11-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39457  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:56:42  

Additional Information
 Earth MOID = 1.61707 au 
 Jupiter MOID = 2.21072 au 
 T_jup = 3.276 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456129.5 (2012-Jul-21.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .079941865557773 3.6793e-08  
q 2.580323652876811 1.0277e-07 au
tp 2455310.648085866347
(2010-Apr-24.14808587)
0.00014678 TDB
node 300.1564328449791 1.7489e-05 deg
peri 120.2209930493891 3.5901e-05 deg
i 13.89625026113242 4.7336e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2573  
   data-arc span      43026 days (117.80 yr)  
   first obs. used      1903-01-18  
   last obs. used      2020-11-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39457  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:56:42  

Additional Information
 Jupiter MOID = 2.21072 au 
 T_jup = 3.276 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.353754386853123E-15 -3.765328550815973E-15 1.886633618710976E-13 -4.323915568922566E-15 4.024449034154524E-14 -7.620878996434926E-16
q -3.765328550815973E-15 1.056119029326522E-14 -8.007323321063536E-13 9.540275951339E-15 -1.621700430872288E-13 2.252037785104067E-15
tp 1.886633618710976E-13 -8.007323321063536E-13 2.154516539270865E-8 -8.926873710236638E-12 4.618689398687046E-9 -3.738790117096454E-12
node -4.323915568922566E-15 9.540275951339E-15 -8.926873710236638E-12 3.058498598199397E-10 -2.987655949970983E-10 5.525430620205729E-12
peri 4.024449034154524E-14 -1.621700430872288E-13 4.618689398687046E-9 -2.987655949970983E-10 1.288891462809924E-9 -6.217716430753884E-12
i -7.620878996434926E-16 2.252037785104067E-15 -3.738790117096454E-12 5.525430620205729E-12 -6.217716430753884E-12 2.240715151676078E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.8   n/a MPO267710  
diameter diameter 27.033 km 0.847 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 7.523 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2010) Minor Planet Bull. 37, 127-130.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Ferrero, A. (2020) Minor Planet Bull. 47, 172-174.]
[Polakis, T. (2020) Minor Planet Bull. 47, 177-186.]
geometric albedo albedo 0.291   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B S   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)

862 Franzia (A917 BG)          Discovered 1917-Jan-28 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A917 BG = 1948 TT1 = 1949 YT = A903 BA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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