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JPL Small-Body Database Browser
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12698 (1989 US4)
Classification: Main-belt Asteroid          SPK-ID: 2012698
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1001803386279941 4.0436e-08  
a 2.737346392071863 1.2262e-08 au
q 2.463118103571986 1.1105e-07 au
i 1.239688253331233 4.6616e-06 deg
node 222.9738827868893 0.0001967 deg
peri 185.0064709945079 0.00019801 deg
M 174.2181795015098 2.2622e-05 deg
tp 2457799.958161821734
(2017-Feb-15.45816182)
0.00010297 TDB
period 1654.219224243921
4.53
1.1115e-05
3.043e-08
d
yr
n .2176253272383181 1.4623e-09 deg/d
Q 3.01157468057174 1.3491e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1691  
   data-arc span      10793 days (29.55 yr)  
   first obs. used      1989-10-22  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51509  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:04:40  

Additional Information
 Earth MOID = 1.47246 au 
 Jupiter MOID = 2.31752 au 
 T_jup = 3.344 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5   n/a MPO384868  
diameter diameter 5.561 km 0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.206   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12698 (1989 US4)          Discovered 1989-Oct-22 by Mrkos, A. at Klet
Reference: 19991222/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1989 US4 = 1998 SB141 = 1998 VY7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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