Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
4205 David Hughes (1985 YP)
Classification: Mars-crossing Asteroid          SPK-ID: 2004205
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1492303202961932 6.4257e-08  
a 1.726672120693539 6.9825e-09 au
q 1.469000287075935 1.1314e-07 au
i 16.4774914314837 8.1048e-06 deg
node 276.5609957866743 2.1791e-05 deg
peri 110.0095742014013 3.4423e-05 deg
M 144.8924496193052 2.5661e-05 deg
tp 2457066.953416759166
(2015-Feb-13.45341676)
5.8731e-05 JED
period 828.7303464203515
2.27
5.027e-06
1.376e-08
d
yr
n .4343994419354827 2.635e-09 deg/d
Q 1.984343954311143 8.0245e-09 au
  Orbit Determination Parameters
   # obs. used (total)      668  
   data-arc span      12974 days (35.52 yr)  
   first obs. used      1980-06-06  
   last obs. used      2015-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45644  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:51:24  

Additional Information
 Earth MOID = .553126 au 
 Jupiter MOID = 3.43969 au 
 T_jup = 4.106 
[ 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 MPO259367  
rotation period rot_per 24. h n/a LCDB (Rev. 2015-December); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
SMASSII spectral type spec_B Xe   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)

4205 David Hughes (1985 YP)          Discovered 1985-Dec-18 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1985 YP = 1986 AF = 1986 CF 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-13 15:14 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin