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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 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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