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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05131692593661321 2.1003e-08  
a 3.01888319162858 1.4433e-08 au
q 2.86396338647249 6.6704e-08 au
i 10.67057904527219 4.9028e-07 deg
node 154.5839938644002 1.2442e-06 deg
peri 218.6083291513586 1.2818e-05 deg
M 315.6573004575958 1.1639e-05 deg
tp 2459436.486695644265
(2021-Aug-09.98669564)
6.1948e-05 TDB
period 1915.878178564525
5.25
1.374e-05
3.762e-08
d
yr
n .1879033876098169 1.3476e-09 deg/d
Q 3.173802996784671 1.5174e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2663  
   data-arc span      25868 days (70.82 yr)  
   first obs. used      1950-02-17  
   last obs. used      2020-12-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43559  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 17:46:01  

Additional Information
 Earth MOID = 1.86781 au 
 Jupiter MOID = 2.09904 au 
 T_jup = 3.219 
[ 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 12.33   n/a E2021B10  

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 ]
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