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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
56164 (1999 DW7)
Classification: Main-belt Asteroid          SPK-ID: 2056164
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06774825733445269 5.0675e-08  
a 2.649039168936048 1.6545e-08 au
q 2.469571381629924 1.3951e-07 au
i 14.25669412841708 5.5561e-06 deg
node 359.0211781037915 1.8038e-05 deg
peri 249.453959722934 7.3686e-05 deg
M 261.5045702915427 7.9084e-05 deg
tp 2459431.368331697616
(2021-Aug-04.86833170)
0.00034784 TDB
period 1574.820272070178
4.31
1.4754e-05
4.039e-08
d
yr
n .228597514513045 2.1416e-09 deg/d
Q 2.828506956242173 1.7666e-08 au
  Orbit Determination Parameters
   # obs. used (total)      906  
   data-arc span      9956 days (27.26 yr)  
   first obs. used      1992-10-02  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53386  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 09:15:27  

Additional Information
 Earth MOID = 1.49847 au 
 Jupiter MOID = 2.23206 au 
 T_jup = 3.344 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456944.5 (2014-Oct-14.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06930361027724793 5.0245e-08  
q 2.464394251061803 1.384e-07 au
tp 2456282.322474848632
(2012-Dec-20.82247485)
0.0003287 TDB
node 359.0576041761587 1.804e-05 deg
peri 249.4784993913667 7.24e-05 deg
i 14.25969955170839 5.5567e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      906  
   data-arc span      9956 days (27.26 yr)  
   first obs. used      1992-10-02  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53386  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 09:15:27  

Additional Information
 Jupiter MOID = 2.23206 au 
 T_jup = 3.344 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.524594468926275E-15 -6.91486148863571E-15 -9.343450469998498E-12 -2.568586045160998E-14 -1.939219852972069E-12 2.265947711974446E-15
q -6.91486148863571E-15 1.91533439493908E-14 2.675743905092819E-11 7.344703892049565E-14 5.57651922680007E-12 -4.986912357213484E-15
tp -9.343450469998498E-12 2.675743905092819E-11 1.080420671954291E-7 2.511340267417905E-10 2.306246434999035E-8 4.252411149084988E-11
node -2.568586045160998E-14 7.344703892049565E-14 2.511340267417905E-10 3.254341395767156E-10 -2.607120878435107E-10 -7.316549895942244E-12
peri -1.939219852972069E-12 5.57651922680007E-12 2.306246434999035E-8 -2.607120878435107E-10 5.24181823714985E-9 1.649673427843443E-11
i 2.265947711974446E-15 -4.986912357213484E-15 4.252411149084988E-11 -7.316549895942244E-12 1.649673427843443E-11 3.087720932009989E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4   n/a MPO378999  

56164 (1999 DW7)          Discovered 1999-Feb-18 by LONEOS at Anderson Mesa
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 DW7 = 2001 QN105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-18 01:13 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin