Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
308635 (2005 YU55)
Classification: Apollo [NEO, PHA]          SPK-ID: 2308635
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 128 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4305000278764394 1.6491e-09  
a 1.157105013275258 4.2464e-09 au
q .6589712728042918 2.6186e-09 au
i .3402556915716011 1.1615e-06 deg
node 35.93157238843624 4.0659e-05 deg
peri 273.5602722147611 4.0632e-05 deg
M 45.44749765614136 1.318e-05 deg
tp 2458543.106188788674
(2019-Feb-28.60618879)		 1.6329e-05 TDB
period 454.6294758053745
1.24		 2.5027e-06
6.852e-09		 d
yr
n .7918536284130309 4.359e-09 deg/d
Q 1.655238753746225 6.0745e-09 au
   Orbit Determination Parameters
   # obs. used (total)      3989  
   # delay obs. used      9  
   # Doppler obs. used      10  
   data-arc span      4019 days (11.00 yr)  
   first obs. used      2005-12-24  
   last obs. used      2016-12-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .2205  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jun-12 00:48:02  

Additional Information
 Earth MOID = .000466802 au 
 Jupiter MOID = 3.61724 au 
 T_jup = 5.348 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 21.9   n/a MPO254628  
magnitude slope G -0.12   n/a The Astronomer's Telegram, #3763  
diameter diameter 0.4 km n/a 2010 radar result http://echo.jpl.nasa.gov/asteroids/2005YU55/2005YU55_planning.html
rotation period rot_per 18 h n/a 2010 radar result http://echo.jpl.nasa.gov/asteroids/2005YU55/2005YU55_planning.html
SMASSII spectral type spec_B C   n/a M. Hicks et al., ATel 2571, 2010 also R. Binzel, personal communication

308635 (2005 YU55)          Discovered 2005-Dec-28 by Spacewatch at Kitt Peak
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-19 10:11 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin