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 ]  
100737 (1998 DR9)
Classification: Main-belt Asteroid          SPK-ID: 2100737
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1371421224283418 4.7996e-08  
a 2.308406009321245 1.3551e-08 au
q 1.991826309776591 1.1449e-07 au
i 7.047754888203658 5.656e-06 deg
node 7.201436954428901 3.8953e-05 deg
peri 7.437048382508944 4.3087e-05 deg
M 300.8966379750444 2.0978e-05 deg
tp 2459410.817982127297
(2021-Jul-15.31798213)		 7.5536e-05 TDB
period 1281.051888957816
3.51		 1.128e-05
3.088e-08		 d
yr
n .2810190618374355 2.4744e-09 deg/d
Q 2.624985708865899 1.5409e-08 au
   Orbit Determination Parameters
   # obs. used (total)      327  
   data-arc span      8147 days (22.31 yr)  
   first obs. used      1998-02-23  
   last obs. used      2020-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57138  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:04:30  

Additional Information
 Earth MOID = .991181 au 
 Jupiter MOID = 2.84223 au 
 T_jup = 3.564 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.59   n/a E2021B55  

100737 (1998 DR9)          Discovered 1998-Feb-23 by Galad, A., Pravda, A. at Modra
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 DR9 = 2000 XM20 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-03 19:05 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin