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17744 Jodiefoster (1998 BZ31)
Classification: Mars-crossing Asteroid          SPK-ID: 2017744
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3114082132743931 3.4201e-08  
a 2.393170033094148 9.3951e-09 au
q 1.647917229026479 8.0472e-08 au
i 3.075056581757126 4.2218e-06 deg
node 240.6980809025891 6.8393e-05 deg
peri 102.1189300603359 6.8788e-05 deg
M 178.4516282412529 9.6915e-06 deg
tp 2458530.188338269609
(2019-Feb-15.68833827)
3.3538e-05 TDB
period 1352.255513727817
3.70
7.9631e-06
2.18e-08
d
yr
n .2662218762248368 1.5677e-09 deg/d
Q 3.138422837161817 1.2321e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1291  
   data-arc span      17015 days (46.58 yr)  
   first obs. used      1974-08-21  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52381  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:35:56  

Additional Information
 Earth MOID = .641843 au 
 Jupiter MOID = 2.29715 au 
 T_jup = 3.461 
[ 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 15.09   n/a E2021B10  
diameter diameter 2.117 km 0.389 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.360   0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

17744 Jodiefoster           Discovered 1998 Jan. 18 by the OCA-DLR Asteroid Survey at Caussols.
Jodie Foster (b. 1962) is an accomplished actress and film director. For most astronomers she will always be Eleanor "Ellie" Arroway in Robert Zemeckis' movie Contact, based on the novel by the same name written by the late Carl Sagan.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020921/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1998 BZ31 = 1974 QY = 1978 WH5 = 1989 UA9 = 2000 OC45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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