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JPL Small-Body Database Browser
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303 Josephina
Classification: Main-belt Asteroid          SPK-ID: 2000303
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05815329802229043 3.9362e-08  
a 3.129756239186879 1.3429e-08 au
q 2.947750591872321 1.2067e-07 au
i 6.873222894970792 4.6341e-06 deg
node 343.7214307920265 3.4442e-05 deg
peri 64.60698372808071 5.28e-05 deg
M 246.7467585707985 4.0634e-05 deg
tp 2459636.727354718562
(2022-Feb-26.22735472)
0.00022942 TDB
period 2022.386686758667
5.54
1.3016e-05
3.564e-08
d
yr
n .1780075009181264 1.1457e-09 deg/d
Q 3.311761886501436 1.421e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3638  
   data-arc span      46941 days (128.52 yr)  
   first obs. used      1891-03-12  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41151  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:23:54  

Additional Information
 Earth MOID = 1.96514 au 
 Jupiter MOID = 1.93249 au 
 T_jup = 3.200 
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Orbital Elements at Epoch 2455723.5 (2011-Jun-11.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06354291001324752 3.968e-08  
q 2.922902708564149 1.2295e-07 au
tp 2455598.896297866415
(2011-Feb-06.39629787)
0.00020211 TDB
node 344.0353119439245 3.4484e-05 deg
peri 63.68827939221431 5.0056e-05 deg
i 6.875282433569131 4.6352e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3638  
   data-arc span      46941 days (128.52 yr)  
   first obs. used      1891-03-12  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41151  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:23:54  

Additional Information
 Jupiter MOID = 1.93249 au 
 T_jup = 3.200 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.574517170133426E-15 -4.856229108058197E-15 -6.472911359162711E-13 -1.588402715287366E-15 -1.50046269175634E-13 -7.522690347163267E-17
q -4.856229108058197E-15 1.511573580987339E-14 2.500042689704777E-12 -6.354802205505394E-16 5.576068234940722E-13 3.126748629618114E-16
tp -6.472911359162711E-13 2.500042689704777E-12 4.084773455924706E-8 -1.860799001781811E-11 7.349409683663736E-9 -2.155378942960596E-12
node -1.588402715287366E-15 -6.354802205505394E-16 -1.860799001781811E-11 1.189121186349462E-9 -1.184201016110317E-9 2.550590039875528E-12
peri -1.50046269175634E-13 5.576068234940722E-13 7.349409683663736E-9 -1.184201016110317E-9 2.505641151113343E-9 -2.916328275604784E-12
i -7.522690347163267E-17 3.126748629618114E-16 -2.155378942960596E-12 2.550590039875528E-12 -2.916328275604784E-12 2.148553226970007E-11

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 8.9   n/a MPO347513  
diameter diameter 124.923 km 0.952 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 12.497 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Shevchenko, V.G.; Chiorny, V.G.; Gaftonyuk, N.M.; Krugly, Yu.N.; et al. (2005) Abstr. IAU Symp. 229, p. 133.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Shevchenko, V.G.; Chiorny, V.G.; Gaftonyuk, M.; Krugly, Y.N.; et al. (2008) Icarus 196, 601-611.]
geometric albedo albedo 0.034   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

303 Josephina          Discovered 1891-Feb-12 by Millosevich, E. at Rome
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1948 MA = 1974 KC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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