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
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05227565454341639 3.5328e-08  
a 3.020727546956201 1.5389e-08 au
q 2.862817037241737 1.1021e-07 au
i 10.65825299720259 3.4225e-06 deg
node 154.6257338376826 2.0649e-05 deg
peri 218.3536381402297 4.0709e-05 deg
M 278.3973668982989 3.6812e-05 deg
tp 2459435.177772353198
(2021-Aug-08.67777235)		 0.00019722 TDB
period 1917.634175506638
5.25		 1.4654e-05
4.012e-08		 d
yr
n .1877313225839273 1.4346e-09 deg/d
Q 3.178638056670665 1.6194e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2470  
   data-arc span      25738 days (70.47 yr)  
   first obs. used      1950-02-17  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44056  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:30:43  

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-Sep-20 11:47 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin