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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1384689488555521 3.7565e-08  
a 2.99427367471989 1.8657e-08 au
q 2.579659746395576 1.1194e-07 au
i 12.20188332688626 5.4445e-06 deg
node 147.7368648920575 1.9995e-05 deg
peri 117.2386509603748 2.8891e-05 deg
M 208.1207789495239 2.2904e-05 deg
tp 2459798.920216973400
(2022-Aug-07.42021697)
0.00012424 TDB
period 1892.499027335004
5.18
1.7688e-05
4.843e-08
d
yr
n .1902246684411499 1.7779e-09 deg/d
Q 3.408887603044204 2.1241e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1498  
   data-arc span      10726 days (29.37 yr)  
   first obs. used      1991-05-11  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51603  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:34:12  

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

[ hide close-approach data ]
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 1.84663939484389 1.84663880409165 1.84663998559561 2.03508913986762 1.79561169360388 2417041.556364456 3.46189843738791 213.467467007256 30.2373559835937 53.7875318058215 1325097.08922837 T 29 CATAB v2.0f-lin.ifort 2020-Oct-22 16:34:29 2020-Oct-22 16:34
1942-Jul-21 12:59 00:02 Jupiter 1.89002066146852 1.8900198946976 1.89002142823923 2.44780459461104 2.25730746893475 2430562.041248556 2.1754243038228 120.122996452114 27.9327863744778 84.9896066622494 1081200.23265348 T 29 CATAB v2.0f-lin.ifort 2020-Oct-22 16:34:29 2020-Oct-22 16:34
1988-Feb-11 17:52 < 00:01 Jupiter 1.87687389706567 1.87687332326646 1.87687447086477 2.74108854632527 2.5711821780964 2447203.244761206 0.839172992060517 72.3408398477673 19.295820381437 81.8852632371598 1611486.7056459 T 29 CATAB v2.0f-lin.ifort 2020-Oct-22 16:34:29 2020-Oct-22 16:34
2025-Feb-20 04:36 < 00:01 Jupiter 1.85715283438684 1.85715225302745 1.85715341574622 1.94194606704064 1.6908522507514 2460726.691531820 0.422283620767924 105.018868636112 40.7607972907846 -81.6907526773795 2221860.54089968 T 29 CATAB v2.0f-lin.ifort 2020-Oct-22 16:34:29 2020-Oct-22 16:34
2070-Sep-20 04:46 00:02 Jupiter 1.93242648141714 1.93242585370159 1.93242710913302 3.49683004961827 3.36915108129109 2477374.698386980 1.63293852337947 121.851732022212 21.7178447856539 -88.2050232515742 1913705.41881066 T 29 CATAB v2.0f-lin.ifort 2020-Oct-22 16:34:29 2020-Oct-22 16:34
2107-Sep-15 07:48 00:03 Jupiter 1.84926693326985 1.84926632071217 1.84926754582752 1.67715824602485 1.37724245253194 2490882.825225592 3.01797620173862 281.981763748756 52.7230905867821 -87.4363889617508 2395527.28881368 T 29 CATAB v2.0f-lin.ifort 2020-Oct-22 16:34:29 2020-Oct-22 16:34
2144-Aug-31 01:22 00:04 Jupiter 1.9217817581092 1.92178075543743 1.92178276078948 3.11303425534182 2.96807769149168 2504382.556774569 3.66907137490136 263.185505276489 20.2341988318525 -86.3031127310549 1652271.64558969 T 29 CATAB v2.0f-lin.ifort 2020-Oct-22 16:34:29 2020-Oct-22 16:34
2190-Apr-09 11:58 00:06 Jupiter 1.87013675865225 1.87013592122482 1.87013759608849 1.96011553020265 1.71353806625461 2521039.998590956 5.63665452605137 408.464599088646 14.0722218177052 64.2056754314351 1973775.43793871 T 29 CATAB v2.0f-lin.ifort 2020-Oct-22 16:34:29 2020-Oct-22 16:34

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