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13685 (1997 QG4)
Classification: Main-belt Asteroid          SPK-ID: 2013685
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1384689490589509 3.7578e-08  
a 2.994273674819497 1.8673e-08 au
q 2.579659745872358 1.1199e-07 au
i 12.20188333067037 5.4844e-06 deg
node 147.7368649780227 2.0059e-05 deg
peri 117.2386511346357 2.9017e-05 deg
M 208.1207786807305 2.2972e-05 deg
tp 2459798.920218426272
(2022-Aug-07.42021843)
0.00012456 TDB
period 1892.499027429438
5.18
1.7703e-05
4.847e-08
d
yr
n .190224668431658 1.7794e-09 deg/d
Q 3.408887603766636 2.1258e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1473  
   data-arc span      10489 days (28.72 yr)  
   first obs. used      1991-05-11  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51904  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:43:11  

Additional Information
 Earth MOID = 1.59129 au 
 Jupiter MOID = 1.85613 au 
 T_jup = 3.206 
[ 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 13.3   n/a MPO458954  
diameter diameter 8.038 km 0.339 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.207   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13685 (1997 QG4)          Discovered 1997-Aug-27 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1905-Jul-15 01:21 00:03 Jupiter 1.84663939550407 1.84663880179264 1.84663998921498 2.03508913673235 1.7956116901418 2417041.556364812 3.46475641503427 213.628528064128 30.4695057385585 53.8051312302801 1315154.08364156 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 20:43:28 2020-Feb-22 20:43
1942-Jul-21 12:59 00:02 Jupiter 1.89002066026207 1.8900198910572 1.89002142946672 2.44780458991964 2.25730746372071 2430562.041247942 2.17685709790952 120.415828097824 27.9758733233199 84.9479532189355 1078699.28940419 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 20:43:28 2020-Feb-22 20:43
1988-Feb-11 17:52 < 00:01 Jupiter 1.8768738983236 1.87687332204368 1.87687447460341 2.74108847632335 2.57118210358631 2447203.244766248 0.839511127504895 72.547812103966 19.3488354132918 81.9357941757093 1601842.65907897 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 20:43:28 2020-Feb-22 20:43
2025-Feb-20 04:36 < 00:01 Jupiter 1.85715283414718 1.85715224888573 1.85715341940864 1.9419460748173 1.6908522596481 2460726.691533278 0.424684990817024 105.191935871592 40.9878664375845 -81.8170294486224 2219653.58928597 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 20:43:28 2020-Feb-22 20:43
2070-Sep-20 04:46 00:02 Jupiter 1.93242648243559 1.93242585049922 1.93242711437241 3.49683007056961 3.36915110310498 2477374.698387071 1.63595912817328 122.186011973427 21.8129912733356 -88.1462821305349 1897737.7313202 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 20:43:28 2020-Feb-22 20:43
2107-Sep-15 07:48 00:03 Jupiter 1.8492669336424 1.84926631698793 1.84926755029686 1.6771582480849 1.37724245510761 2490882.825231216 3.02298662941263 282.485434210313 52.9014250251356 -87.4569546966418 2393209.32386255 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 20:43:28 2020-Feb-22 20:43
2144-Aug-31 01:22 00:04 Jupiter 1.92178175852468 1.92178075191479 1.92178276514309 3.11303423407172 2.96807766921488 2504382.556775932 3.67460500516801 263.854057333719 20.3462708180036 -86.3025095216154 1641812.74435379 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 20:43:28 2020-Feb-22 20:43
2190-Apr-09 11:58 00:06 Jupiter 1.87013675848064 1.87013591674532 1.87013760022479 1.960115532831 1.71353806923694 2521039.998595697 5.64460150136667 409.122688060836 14.0943207127127 64.2020278531548 1962094.38107608 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 20:43:28 2020-Feb-22 20:43

Alternate Designations
 1997 QG4 = 1991 JR1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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