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 ]  
136946 (1998 QY99)
Classification: Main-belt Asteroid          SPK-ID: 2136946
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .208748518283212 3.4418e-08  
a 2.404566095300802 1.5006e-08 au
q 1.902616485792711 8.3748e-08 au
i 2.76514866547827 5.889e-06 deg
node 29.73939576744193 8.4825e-05 deg
peri 265.8324259730482 8.6245e-05 deg
M 335.9832097564155 1.7263e-05 deg
tp 2459091.358585209749
(2020-Aug-29.85858521)
6.5545e-05 TDB
period 1361.925983604198
3.73
1.2749e-05
3.49e-08
d
yr
n .2643315454245881 2.4745e-09 deg/d
Q 2.906515704808894 1.8139e-08 au
  Orbit Determination Parameters
   # obs. used (total)      453  
   data-arc span      7966 days (21.81 yr)  
   first obs. used      1998-08-26  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58593  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 02:32:01  

Additional Information
 Earth MOID = .889157 au 
 Jupiter MOID = 2.30589 au 
 T_jup = 3.492 
[ 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 16.7   n/a MPO436676  

136946 (1998 QY99)          Discovered 1998-Aug-26 by Elst, E. W. at La Silla
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1998 QY99 = 2001 GG2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Sep-28 03:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin