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5253 Fredclifford (1985 XB)
Classification: Mars-crossing Asteroid          SPK-ID: 2005253
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2247790618268826 6.5338e-08  
a 1.973888225466354 7.8824e-09 au
q 1.530199481994897 1.2685e-07 au
i 28.77030067552383 1.1624e-05 deg
node 71.27811461383112 1.6492e-05 deg
peri 69.32527594635788 3.3642e-05 deg
M 343.7201698491631 2.6175e-05 deg
tp 2457646.306765894851
(2016-Sep-14.80676589)
7.3742e-05 JED
period 1012.936595121574
2.77
6.0675e-06
1.661e-08
d
yr
n .355402304284201 2.1289e-09 deg/d
Q 2.417576968937811 9.6542e-09 au
  Orbit Determination Parameters
   # obs. used (total)      607  
   data-arc span      13781 days (37.73 yr)  
   first obs. used      1978-05-04  
   last obs. used      2016-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5317  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:11:57  

Additional Information
 Earth MOID = .680385 au 
 Jupiter MOID = 3.03587 au 
 T_jup = 3.688 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3 mag n/a MPO309190  
rotation period rot_per 3.053 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html]
[Warner, B.D. (2014) Minor Planet Bul. 41, 144-155.]
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)

5253 Fredclifford           Discovered 1985 Dec. 15 by S. Singer-Brewster at Palomar.
Fred Clifford (1924-1980) was a mariner, joining the U.S. Merchant Marine in 1943 to fulfill a life-long dream of going to sea. He was a forward thinker and inspired early technological development of foam-core surfboards and was co-owner of Clifford/George Surfboards in Santa Barbara, California, USA in the 1960s.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-06-02Last Updated: 2015-06-04

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Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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