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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1844837029900585 4.3344e-08  
a 2.433971195586958 1.0155e-08 au
q 1.984943176453936 1.0308e-07 au
i 3.778578934308468 3.8375e-06 deg
node 108.8354922235928 7.5177e-05 deg
peri 209.761743494416 7.6095e-05 deg
M .1712082757545783 1.1244e-05 deg
tp 2458599.840379975827
(2019-Apr-26.34037998)
4.3319e-05 TDB
period 1386.984406306167
3.80
8.6802e-06
2.377e-08
d
yr
n .2595559101913453 1.6244e-09 deg/d
Q 2.88299921471998 1.2029e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1118  
   data-arc span      13939 days (38.16 yr)  
   first obs. used      1981-09-28  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56063  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:22:04  

Additional Information
 Earth MOID = .971874 au 
 Jupiter MOID = 2.41341 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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