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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1845139106879506 4.2527e-08  
a 2.434728470459165 9.5415e-09 au
q 1.985487198911452 1.0081e-07 au
i 3.778563077021839 3.6154e-06 deg
node 108.8339128007716 6.3186e-05 deg
peri 209.8876565474382 6.3923e-05 deg
M 155.7392259672575 1.0529e-05 deg
tp 2458600.198070479670
(2019-Apr-26.69807048)
3.933e-05 TDB
period 1387.631749709307
3.80
8.157e-06
2.233e-08
d
yr
n .2594348248917018 1.5251e-09 deg/d
Q 2.883969742006878 1.1302e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1293  
   data-arc span      14405 days (39.44 yr)  
   first obs. used      1981-09-28  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54907  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:11:07  

Additional Information
 Earth MOID = .971323 au 
 Jupiter MOID = 2.41521 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 15.09   n/a E2021B10  
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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