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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2247742753265942 6.6744e-08  
a 1.973995590194701 8.0502e-09 au
q 1.530292161910794 1.2954e-07 au
i 28.76929514581834 1.1743e-05 deg
node 71.27909949027563 1.6639e-05 deg
peri 69.30571635820279 3.4068e-05 deg
M 272.6577849335778 2.6192e-05 deg
tp 2457646.275956580430
(2016-Sep-14.77595658)
7.4178e-05 JED
period 1013.019240486035
2.77
6.1968e-06
1.697e-08
d
yr
n .3553733094223127 2.1739e-09 deg/d
Q 2.417699018478607 9.8597e-09 au
  Orbit Determination Parameters
   # obs. used (total)      605  
   data-arc span      13666 days (37.42 yr)  
   first obs. used      1978-05-04  
   last obs. used      2015-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52845  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-28 16:07:15  

Additional Information
 Earth MOID = .681499 au 
 Jupiter MOID = 3.03696 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. 2015-December); 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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