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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1398169540890893 5.2746e-08  
a 2.275547026095508 9.9873e-09 au
q 1.957386972020348 1.2047e-07 au
i .330387801515139 4.7117e-06 deg
node 259.2391506853163 0.0010075 deg
peri 254.2606490160643 0.0010076 deg
M 182.9742583347064 1.7875e-05 deg
tp 2458017.039734654921
(2017-Sep-20.53973466)
6.3691e-05 JED
period 1253.796777733181
3.43
8.2543e-06
2.26e-08
d
yr
n .2871278714329343 1.8903e-09 deg/d
Q 2.593707080170667 1.1384e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1176  
   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      .52656  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 16:11:14  

Additional Information
 Earth MOID = .967764 au 
 Jupiter MOID = 2.40157 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. 2015-December); 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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