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12263 (1989 YA4)
Classification: Main-belt Asteroid          SPK-ID: 2012263
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1397855074279105 5.2483e-08  
a 2.275508532908316 1.0012e-08 au
q 1.957425417979186 1.1985e-07 au
i .3304216660072788 4.7086e-06 deg
node 259.2052523852133 0.0010024 deg
peri 254.3313026173419 0.0010026 deg
M 240.3519522050324 1.8002e-05 deg
tp 2458017.195917601054
(2017-Sep-20.69591760)
6.3689e-05 JED
period 1253.764964000432
3.43
8.2744e-06
2.265e-08
d
yr
n .2871351571759792 1.895e-09 deg/d
Q 2.593591647837445 1.1411e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1184  
   data-arc span      9442 days (25.85 yr)  
   first obs. used      1989-12-30  
   last obs. used      2015-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52489  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:49:12  

Additional Information
 Earth MOID = .966626 au 
 Jupiter MOID = 2.40133 au 
 T_jup = 3.596 
[ 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 14.6 mag n/a MPO344401  
rotation period rot_per 2.75 h n/a LCDB (Rev. 2016-February); 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

12263 (1989 YA4)          Discovered 1989-Dec-30 by McNaught, R. H. at Siding Spring
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1989 YA4 = 1997 CL22 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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