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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
136998 (1998 SG75)
Classification: Main-belt Asteroid          SPK-ID: 2136998
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .170510112248573 4.9854e-08  
a 2.520742899444681 9.7449e-09 au
q 2.090930744710576 1.277e-07 au
i 3.498688018477169 3.1692e-06 deg
node 127.9779903836523 7.8791e-05 deg
peri 244.5209269922975 7.9221e-05 deg
M 249.4454820929165 1.0291e-05 deg
tp 2459845.416171008404
(2022-Sep-22.91617101)
4.3386e-05 TDB
period 1461.811101187669
4.00
8.4768e-06
2.321e-08
d
yr
n .2462698495773584 1.4281e-09 deg/d
Q 2.950555054178787 1.1406e-08 au
  Orbit Determination Parameters
   # obs. used (total)      608  
   data-arc span      11242 days (30.78 yr)  
   first obs. used      1990-10-19  
   last obs. used      2021-07-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56012  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:56:32  

Additional Information
 Earth MOID = 1.09311 au 
 Jupiter MOID = 2.51764 au 
 T_jup = 3.433 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457496.5 (2016-Apr-18.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1687630404022294 4.9709e-08  
q 2.097843910738744 1.2707e-07 au
tp 2456917.672357018023
(2014-Sep-17.17235702)
3.5773e-05 TDB
node 128.0507752963974 7.8678e-05 deg
peri 244.1002466207705 7.9127e-05 deg
i 3.499402808833576 3.1714e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      608  
   data-arc span      11242 days (30.78 yr)  
   first obs. used      1990-10-19  
   last obs. used      2021-07-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56012  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:56:32  

Additional Information
 Jupiter MOID = 2.51764 au 
 T_jup = 3.433 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.470976199960569E-15 -6.304017828165055E-15 2.071279677193609E-13 2.699155314410157E-14 -1.661629959490404E-15 -3.573067257405902E-15
q -6.304017828165055E-15 1.614680171031577E-14 -4.296719670501046E-13 -6.706482491348967E-14 3.237101487171111E-14 9.227151877681952E-15
tp 2.071279677193609E-13 -4.296719670501046E-13 1.279718865264363E-9 1.73150275576168E-11 3.324358990240726E-10 -5.586403895959474E-15
node 2.699155314410157E-14 -6.706482491348967E-14 1.73150275576168E-11 6.190267898514939E-9 -6.174397104330776E-9 8.239894298222617E-11
peri -1.661629959490404E-15 3.237101487171111E-14 3.324358990240726E-10 -6.174397104330776E-9 6.261152759429597E-9 -8.219831855948626E-11
i -3.573067257405902E-15 9.227151877681952E-15 -5.586403895959474E-15 8.239894298222617E-11 -8.219831855948626E-11 1.00574622095594E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.35   n/a MPO637679  

136998 (1998 SG75)          Discovered 1998-Sep-21 by Elst, E. W. at La Silla
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-16 17:18 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin