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 ]  
5645 (1990 SP)
Classification: Apollo [NEO]          SPK-ID: 2005645
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 103 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3873627426243703 6.6202e-08  
a 1.3548907279426 2.6117e-09 AU
q .830056539610425 8.9297e-08 AU
i 13.50734039168308 1.0058e-05 deg
node 45.77120917309592 2.7157e-05 deg
peri 48.18591777271297 3.1176e-05 deg
M 74.4732915677221 8.0895e-06 deg
tp 2456881.333857423787
(2014-Aug-11.83385742)
1.3032e-05 JED
period 576.0429064482256
1.58
1.6656e-06
4.56e-09
d
yr
n .6249534469918112 1.807e-09 deg/d
Q 1.879724916274775 3.6234e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      516  
   data-arc span      14830 days (40.60 yr)  
   first obs. used      1974-08-13  
   last obs. used      2015-03-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48984  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:22:31  

Additional Information
 Earth MOID = .0538763 AU 
 T_jup = 4.755 
[ 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 17.1 mag n/a MPO267730  
rotation period rot_per 30.39 h n/a LCDB (Rev. 2015-May); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; et al. (2005) Icarus 173, 108-131.]

5645 (1990 SP)          Discovered 1990-Sep-20 by McNaught, R. H. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-May-25 03:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin