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 ]  
49981 (1999 YJ13)
Classification: Main-belt Asteroid          SPK-ID: 2049981
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1498846951368437 3.5424e-08  
a 2.281745046679815 8.0345e-09 au
q 1.939746385978208 8.0715e-08 au
i 8.407672988517493 3.3706e-06 deg
node 130.4112773663934 3.1213e-05 deg
peri 142.8030077686772 3.4126e-05 deg
M 67.5706396171211 1.3872e-05 deg
tp 2458364.204946353677
(2018-Sep-02.70494635)
4.8619e-05 TDB
period 1258.92280722354
3.45
6.6494e-06
1.821e-08
d
yr
n .2859587561162332 1.5104e-09 deg/d
Q 2.623743707381423 9.2388e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1635  
   data-arc span      7771 days (21.28 yr)  
   first obs. used      1998-08-28  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50592  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:25:25  

Additional Information
 Earth MOID = .930175 au 
 Jupiter MOID = 2.50711 au 
 T_jup = 3.576 
[ 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 14.5   n/a MPO452850  
diameter diameter 2.853 km 0.427 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.413   0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49981 (1999 YJ13)          Discovered 1999-Dec-30 by Korlevic, K. at Visnjan
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-26 03:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin