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 ]  
5624 Shirley (1991 AY1)
Classification: Main-belt Asteroid          SPK-ID: 2005624
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05227560643421074 3.8299e-08  
a 3.020727527516788 1.7113e-08 au
q 2.862817164143334 1.1683e-07 au
i 10.65825089933289 3.8341e-06 deg
node 154.6257357238979 2.2029e-05 deg
peri 218.3535839473921 4.3498e-05 deg
M 278.3974209567482 3.9449e-05 deg
tp 2459435.177480200779
(2021-Aug-08.67748020)		 0.00021151 TDB
period 1917.634156995692
5.25		 1.6295e-05
4.461e-08		 d
yr
n .1877313243961 1.5953e-09 deg/d
Q 3.178637890890241 1.8007e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2103  
   data-arc span      25285 days (69.23 yr)  
   first obs. used      1950-02-17  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4585  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:09:20  

Additional Information
 Earth MOID = 1.86821 au 
 Jupiter MOID = 2.10105 au 
 T_jup = 3.218 
[ 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 12.3   n/a MPO347569  

5624 Shirley (1991 AY1)          Discovered 1991-Jan-11 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1991 AY1 = 1950 DK = 1968 QR1 = 1989 QZ = 1989 RE4 = 1990 WT7 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-20 09:12 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin