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 ]  
74781 (1999 RY245)
Classification: Main-belt Asteroid          SPK-ID: 2074781
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2435124056161039 4.5091e-08  
a 2.332446327818126 9.6302e-09 au
q 1.764466711560686 1.0506e-07 au
i 4.279267630922024 4.3001e-06 deg
node 74.92696593367481 5.7323e-05 deg
peri 313.1374207369207 5.7897e-05 deg
M 265.8633395607255 6.9493e-06 deg
tp 2459340.729684052594
(2021-May-06.22968405)
2.5572e-05 TDB
period 1301.115693794395
3.56
8.058e-06
2.206e-08
d
yr
n .2766856181329622 1.7136e-09 deg/d
Q 2.900425944075565 1.1975e-08 au
  Orbit Determination Parameters
   # obs. used (total)      866  
   data-arc span      10300 days (28.20 yr)  
   first obs. used      1991-05-13  
   last obs. used      2019-07-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .465  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:21:54  

Additional Information
 Earth MOID = .772909 au 
 Jupiter MOID = 2.54996 au 
 T_jup = 3.526 
[ 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 15.7   n/a MPO337822  

74781 (1999 RY245)          Discovered 1999-Sep-07 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RY245 = 1997 AU15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-08 13:38 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin