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 ]  
74701 (1999 RT145)
Classification: Main-belt Asteroid          SPK-ID: 2074701
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2323888469544236 4.5649e-08  
a 2.315676638151473 1.0966e-08 au
q 1.777539214292156 1.038e-07 au
i 3.282305985086214 5.1263e-06 deg
node 281.8314724956427 0.00010106 deg
peri 112.1538319890726 0.00010201 deg
M 171.4568477103059 1.5294e-05 deg
tp 2457987.489896790878
(2017-Aug-21.98989679)
5.2038e-05 TDB
period 1287.10891458912
3.52
9.1423e-06
2.503e-08
d
yr
n .2796966099134833 1.9867e-09 deg/d
Q 2.85381406201079 1.3514e-08 au
  Orbit Determination Parameters
   # obs. used (total)      477  
   data-arc span      14742 days (40.36 yr)  
   first obs. used      1978-11-28  
   last obs. used      2019-04-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5849  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:07:46  

Additional Information
 Earth MOID = .786616 au 
 Jupiter MOID = 2.59128 au 
 T_jup = 3.543 
[ 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 16.0   n/a MPO436305  

74701 (1999 RT145)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RT145 = 1978 WC21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-05 16:09 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin