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 ]  
49684 (1999 TH137)
Classification: Main-belt Asteroid          SPK-ID: 2049684
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08866254141335003 4.2039e-08  
a 2.349330638913105 7.9984e-09 au
q 2.14103301384682 9.8692e-08 au
i 5.28154092521817 3.869e-06 deg
node 203.5532387250434 4.2813e-05 deg
peri 325.594233188017 4.6726e-05 deg
M 118.4744242670941 1.9812e-05 deg
tp 2458567.650672710400
(2019-Mar-25.15067271)
7.1513e-05 TDB
period 1315.269171285065
3.60
6.7168e-06
1.839e-08
d
yr
n .2737082323979868 1.3978e-09 deg/d
Q 2.55762826397939 8.7075e-09 au
  Orbit Determination Parameters
   # obs. used (total)      889  
   data-arc span      9693 days (26.54 yr)  
   first obs. used      1994-04-06  
   last obs. used      2020-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57251  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:31:23  

Additional Information
 Earth MOID = 1.14877 au 
 Jupiter MOID = 2.41537 au 
 T_jup = 3.548 
[ 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 15.8   n/a MPO436130  
rotation period rot_per 32.4416 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

49684 (1999 TH137)          Discovered 1999-Oct-06 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TH137 = 2001 EN21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-23 12:25 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin