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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1384689486966009 3.7601e-08  
a 2.994273675053739 1.8698e-08 au
q 2.579659747159141 1.1209e-07 au
i 12.20188352194604 5.5818e-06 deg
node 147.7368653667375 2.0172e-05 deg
peri 117.238649867738 2.929e-05 deg
M 208.1207794067011 2.3138e-05 deg
tp 2459798.920214703577
(2022-Aug-07.42021470)
0.00012537 TDB
period 1892.499027651513
5.18
1.7726e-05
4.853e-08
d
yr
n .1902246684093361 1.7818e-09 deg/d
Q 3.408887602948338 2.1287e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1438  
   data-arc span      10464 days (28.65 yr)  
   first obs. used      1991-05-11  
   last obs. used      2020-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52242  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:12:43  

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 1.84663939852461 1.84663879752746 1.84663999952122 2.03508916703702 1.79561172490597 2417041.556352338 3.4695072832137 213.92856759384 30.9629441349001 53.8490751504063 1293073.45925299 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:13:24 2020-Jan-28 23:13
1942-Jul-21 12:59 00:02 Jupiter 1.89002066627707 1.89001989165338 1.89002144090043 2.44780449039088 2.25730735642442 2430562.041232155 2.17920783230886 121.10910745948 28.0488245269765 84.868913420916 1072412.0372404 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:13:24 2020-Jan-28 23:13
1988-Feb-11 17:52 < 00:01 Jupiter 1.87687389757421 1.8768733151352 1.87687448001301 2.74108865878585 2.57118229803604 2447203.244751972 0.839930653665448 73.0624867499507 19.4532867981777 82.0412523493472 1580622.27082584 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:13:24 2020-Jan-28 23:13
2025-Feb-20 04:36 < 00:01 Jupiter 1.85715284137133 1.85715224699027 1.8571534357524 1.94194611910113 1.69085231155738 2460726.691540748 0.429971573307323 105.660981570712 41.4621401107956 -82.1425262882415 2213823.34152176 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:13:24 2020-Jan-28 23:13
2070-Sep-20 04:46 00:02 Jupiter 1.93242647622749 1.9324258345155 1.93242711793991 3.49683012581699 3.36915116002809 2477374.698387926 1.64209623778355 122.911104197603 22.0357802544066 -88.0211068766013 1861255.52436812 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:13:24 2020-Jan-28 23:13
2107-Sep-15 07:48 00:03 Jupiter 1.84926693764251 1.84926631137768 1.84926756390734 1.67715823772563 1.37724244321181 2490882.825235624 3.03275159003314 283.456771964117 53.2671933601114 -87.4944851218387 2389567.19758982 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:13:24 2020-Jan-28 23:13
2144-Aug-31 01:22 00:04 Jupiter 1.92178177218724 1.92178075668701 1.92178278769588 3.1130344102846 2.96807785508945 2504382.556799394 3.68511179334409 265.30313935602 20.5904023912378 -86.2981882924455 1616541.52054911 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:13:24 2020-Jan-28 23:13
2190-Apr-09 11:58 00:06 Jupiter 1.87013675702116 1.87013590553895 1.8701376085121 1.96011541315208 1.71353793212998 2521039.998621661 5.65975143502978 410.393274255788 14.1309876494561 64.196223988869 1935473.81160175 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:13:24 2020-Jan-28 23:13

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