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 ]  
123920 (2001 DW99)
Classification: Mars-crossing Asteroid          SPK-ID: 2123920
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1520072250691379 6.5563e-08  
a 1.877291280934787 6.6242e-09 au
q 1.591929442673403 1.2148e-07 au
i 24.03863649233072 9.873e-06 deg
node 15.74544721839746 1.0701e-05 deg
peri 70.47879548662769 3.148e-05 deg
M 262.0126305287062 2.9542e-05 deg
tp 2459256.219307488204
(2021-Feb-10.71930749)
7.7569e-05 TDB
period 939.4981332030038
2.57
4.9727e-06
1.361e-08
d
yr
n .3831833052958417 2.0281e-09 deg/d
Q 2.162653119196172 7.6311e-09 au
  Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      11826 days (32.38 yr)  
   first obs. used      1988-03-18  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49944  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:22:49  

Additional Information
 Earth MOID = .701213 au 
 Jupiter MOID = 3.13927 au 
 T_jup = 3.856 
[ 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 15.4   n/a MPO475086  

123920 (2001 DW99)          Discovered 2001-Feb-17 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 2001 DW99 = 1988 FP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-25 22:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin