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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05227566199094756 3.7521e-08  
a 3.020727550383338 1.6248e-08 au
q 2.862817017992755 1.1511e-07 au
i 10.65825157329246 3.5872e-06 deg
node 154.6257249618943 2.1645e-05 deg
peri 218.3536532205687 4.2361e-05 deg
M 278.39735937639 3.8516e-05 deg
tp 2459435.177813160353
(2021-Aug-08.67781316)
0.00020658 TDB
period 1917.634178770087
5.25
1.5472e-05
4.236e-08
d
yr
n .1877313222644441 1.5147e-09 deg/d
Q 3.17863808277392 1.7097e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2290  
   data-arc span      25637 days (70.19 yr)  
   first obs. used      1950-02-17  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4549  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:23:47  

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-May-25 18:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin