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17728 (1997 YM12)
Classification: Main-belt Asteroid          SPK-ID: 2017728
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .184521554297031 4.2562e-08  
a 2.434444904275213 9.9873e-09 au
q 1.985237346687863 1.0091e-07 au
i 3.778634908086463 3.6273e-06 deg
node 108.8341338094354 7.3263e-05 deg
peri 209.8398614127981 7.4204e-05 deg
M 103.9094662947758 1.1345e-05 deg
tp 2458600.047540356069
(2019-Apr-26.54754036)
4.3282e-05 TDB
period 1387.389336240514
3.80
8.5377e-06
2.337e-08
d
yr
n .2594801549906043 1.5968e-09 deg/d
Q 2.883652461862562 1.183e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1166  
   data-arc span      14007 days (38.35 yr)  
   first obs. used      1981-09-28  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55846  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:10:54  

Additional Information
 Earth MOID = .973041 au 
 Jupiter MOID = 2.41558 au 
 T_jup = 3.479 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO347663  
diameter diameter 5.727 km 0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17728 (1997 YM12)          Discovered 1997-Dec-21 by Spacewatch at Kitt Peak
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 YM12 = 1981 SB7 = 1992 OJ7 = 1999 GE28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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