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JPL Small-Body Database Browser
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12545 (1998 QT19)
Classification: Main-belt Asteroid          SPK-ID: 2012545
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04614320697475929 3.2989e-08  
a 2.806967024006931 1.539e-08 au
q 2.677444563646855 9.2373e-08 au
i 5.58224098252551 4.4507e-06 deg
node 164.8518549968585 3.9338e-05 deg
peri 116.1031594274214 6.3557e-05 deg
M 188.6273515388647 5.0385e-05 deg
tp 2459418.198875599910
(2021-Jul-22.69887560)
0.00024073 TDB
period 1717.727991364542
4.70
1.4127e-05
3.868e-08
d
yr
n .2095791660902146 1.7237e-09 deg/d
Q 2.936489484367008 1.6101e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1496  
   data-arc span      11938 days (32.68 yr)  
   first obs. used      1987-04-01  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52803  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:26:10  

Additional Information
 Earth MOID = 1.66646 au 
 Jupiter MOID = 2.12649 au 
 T_jup = 3.314 
[ show covariance matrix ]

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 14.0   n/a MPO384867  
diameter diameter 4.874 km 0.277 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.225   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12545 (1998 QT19)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 QT19 = 1987 GZ = 1993 OB14 = 1997 GZ40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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