Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
100993 (1998 QG39)
Classification: Main-belt Asteroid          SPK-ID: 2100993
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3073798259974233 3.6841e-08  
a 2.698062139843763 8.0061e-09 au
q 1.868732268768352 1.0096e-07 au
i 8.906527025542902 4.3562e-06 deg
node 344.2500823111633 2.4441e-05 deg
peri 11.23060454552148 2.5111e-05 deg
M 2.834960149001784 6.4818e-06 deg
tp 2459187.752623701885
(2020-Dec-04.25262370)
2.9117e-05 TDB
period 1618.737204802446
4.43
7.205e-06
1.973e-08
d
yr
n .2223955802905853 9.8989e-10 deg/d
Q 3.527392010919174 1.0467e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1085  
   data-arc span      9100 days (24.91 yr)  
   first obs. used      1996-03-12  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49866  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:34:42  

Additional Information
 Earth MOID = .863124 au 
 Jupiter MOID = 1.92767 au 
 T_jup = 3.282 
[ 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 15.07   n/a E2021B55  
diameter diameter 4.783 km 1.592 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.093   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100993 (1998 QG39)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ 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
1920-Nov-18 05:27 00:01 Jupiter 1.93168602802368 1.93168555582164 1.93168650035111 2.3376836287999 2.14191207380307 2422646.727341551 1.16641648430623 888.975041952534 17.3074264993884 -88.5756777019608 2246500.01822073 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:45 2021-Apr-13 15:34
1956-Apr-01 17:48 < 00:01 Jupiter 1.9763195592912 1.9763190843125 1.97632003432293 2.38848050634332 2.20174192794836 2435565.241423863 0.750017737528732 664.538764435299 9.53436022057662 -87.8610478659989 2329419.52204852 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:45 2021-Apr-13 15:34
2147-May-24 11:50 00:02 Jupiter 1.98495031087112 1.98494957090257 1.98495105110132 1.97688607128743 1.74775112362916 2505378.993032566 1.59436215680147 1544.91828112059 26.7175377916416 87.8018697080749 2244475.02367766 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:45 2021-Apr-13 15:34
2182-Oct-04 23:04 00:02 Jupiter 1.94634001595218 1.946339363702 1.94634066828411 2.04695388161393 1.82198944487623 2518296.461412155 1.9678178959742 917.350213045539 27.0602041965051 86.6209043580454 2407867.75680538 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 15:34:45 2021-Apr-13 15:34

Alternate Designations
 1998 QG39 = 1996 EC9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-23 19:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin