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 ]  
9937 Triceratops (1988 DJ2)
Classification: Main-belt Asteroid          SPK-ID: 2009937
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2307777167414931 3.7639e-08  
a 2.366359899158611 6.499e-09 au
q 1.820256764642157 9.0799e-08 au
i 1.263462671344512 4.3569e-06 deg
node 327.2405583543118 0.00016276 deg
peri 47.11778286235635 0.00016298 deg
M 292.2691084133332 8.8029e-06 deg
tp 2458850.651962431726
(2020-Jan-02.15196243)
3.3006e-05 TDB
period 1329.595762964225
3.64
5.4774e-06
1.5e-08
d
yr
n .2707589855712307 1.1154e-09 deg/d
Q 2.912463033675065 7.9988e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1334  
   data-arc span      13077 days (35.80 yr)  
   first obs. used      1983-11-08  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56386  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:05:43  

Additional Information
 Earth MOID = .820574 au 
 Jupiter MOID = 2.55193 au 
 T_jup = 3.511 
[ 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 14.9   n/a MPO431615  

9937 Triceratops           Discovered 1988 Feb. 17 by E. W. Elst at the European Southern Observatory.
Triceratops was a heavy dinosaur with three horns, two above the eyes and one on the snout. It lived in Upper Cretaceous times. Many Triceratops skeletons have been found in Wyoming and Colorado.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1988 DJ2 = 1983 VY2 = 1990 QZ7 = 1990 RH6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin