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JPL Small-Body Database Browser
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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456879.5 (2014-Aug-10.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1854038553366484 4.2554e-08  
q 1.982297433518309 1.0098e-07 au
tp 2457213.944747868461
(2015-Jul-10.44474787)
4.2622e-05 TDB
node 108.8788845595717 7.3325e-05 deg
peri 210.0419000679204 7.4256e-05 deg
i 3.77796088053148 3.6267e-06 deg
  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
 Jupiter MOID = 2.41558 au 
 T_jup = 3.479 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.810847115639373E-15 -4.28507847790594E-15 5.384074871697665E-13 7.514861331795925E-15 9.269742358444736E-14 -1.882511269953741E-15
q -4.28507847790594E-15 1.01977151834244E-14 -1.331812730032507E-12 -1.631374406854E-14 -2.396956344902849E-13 4.559695993036128E-15
tp 5.384074871697665E-13 -1.331812730032507E-12 1.816619398652173E-9 -7.092519876232322E-12 5.225431669540637E-10 -1.796831603560183E-12
node 7.514861331795925E-15 -1.631374406854E-14 -7.092519876232322E-12 5.37658279415921E-9 -5.366918606548271E-9 5.500579000614703E-11
peri 9.269742358444736E-14 -2.396956344902849E-13 5.225431669540637E-10 -5.366918606548271E-9 5.513986650785454E-9 -5.538018585587944E-11
i -1.882511269953741E-15 4.559695993036128E-15 -1.796831603560183E-12 5.500579000614703E-11 -5.538018585587944E-11 1.315304051118286E-11

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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