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178803 Kristenjohnson (2001 FA4)
Classification: Main-belt Asteroid          SPK-ID: 2178803
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1341112325834473 1.1252e-07  
a 2.351968710371899 2.8472e-08 AU
q 2.036543287626222 2.5534e-07 AU
i .887596160560964 1.1589e-05 deg
node 337.127749382717 0.00054763 deg
peri 181.8863516476223 0.00054943 deg
M 302.1290010649796 4.7241e-05 deg
tp 2457212.289397423833
(2015-Jul-08.78939742)
0.00017496 JED
period 1317.485173500973
3.61
2.3924e-05
6.55e-08
d
yr
n .2732478567810874 4.9618e-09 deg/d
Q 2.667394133117575 3.2291e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      112  
   data-arc span      4600 days (12.59 yr)  
   first obs. used      2001-02-20  
   last obs. used      2013-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .69225  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 14:17:26  

Additional Information
 Earth MOID = 1.04619 AU 
 T_jup = 3.545 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.8 mag n/a MPO268149  

178803 Kristenjohnson           Discovered 2001 Mar. 19 by D. Healy at Junk Bond Observatory.
Despite losing her sight at age 13, Kristen Johnson (b. 1985) maintains an avid interest in the stars with tactile books. Daughter of astronomer Wayne Johnson, she served as an officer of the Foundation for Blind Children in Phoenix, Arizona, and of the National Federation for the Blind.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20081113/MPCPages.arcLast Updated: 2008-11-17

Alternate Designations
 2001 FA4 = 2007 YC47 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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