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 ]  
59842 (1999 RT55)
Classification: Main-belt Asteroid          SPK-ID: 2059842
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2746205455873367 4.0844e-08  
a 2.592919288208648 1.4192e-08 au
q 1.88085037861686 1.0343e-07 au
i 5.662726199249306 4.2465e-06 deg
node 140.2492054073024 5.8176e-05 deg
peri 187.4843727646424 5.9197e-05 deg
M 254.8914178648944 1.3388e-05 deg
tp 2459045.764018351551
(2020-Jul-15.26401835)
5.8621e-05 TDB
period 1525.042421374467
4.18
1.2521e-05
3.428e-08
d
yr
n .2360590072475129 1.9381e-09 deg/d
Q 3.304988197800435 1.809e-08 au
  Orbit Determination Parameters
   # obs. used (total)      642  
   data-arc span      8206 days (22.47 yr)  
   first obs. used      1996-11-12  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58088  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:40:44  

Additional Information
 Earth MOID = .868666 au 
 Jupiter MOID = 2.05503 au 
 T_jup = 3.358 
[ 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 MPO474478  
diameter diameter 3.171 km 0.688 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.076   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

59842 (1999 RT55)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RT55 = 1996 XM24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-28 08:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin