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 ]  
100254 (1994 SG4)
Classification: Main-belt Asteroid          SPK-ID: 2100254
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08113299557076009 4.3401e-08  
a 2.653862694633244 1.6556e-08 au
q 2.438546864384159 1.1175e-07 au
i 4.274350007622437 5.2348e-06 deg
node 5.828318126150437 5.7269e-05 deg
peri 254.6577533260668 6.6154e-05 deg
M 118.5777139696205 3.3778e-05 deg
tp 2458680.364286887972
(2019-Jul-15.86428689)
0.00014691 TDB
period 1579.123516989906
4.32
1.4777e-05
4.046e-08
d
yr
n .2279745669839843 2.1333e-09 deg/d
Q 2.869178524882328 1.7899e-08 au
  Orbit Determination Parameters
   # obs. used (total)      479  
   data-arc span      9596 days (26.27 yr)  
   first obs. used      1994-09-28  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57269  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:31:20  

Additional Information
 Earth MOID = 1.42599 au 
 Jupiter MOID = 2.17924 au 
 T_jup = 3.380 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457569.5 (2016-Jun-30.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08065747313237093 4.331e-08  
q 2.441024995938086 1.1149e-07 au
tp 2457104.463473005310
(2015-Mar-22.96347301)
0.00014531 TDB
node 5.921881239702976 5.7223e-05 deg
peri 255.5914545453859 6.6228e-05 deg
i 4.275747999768088 5.2356e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      479  
   data-arc span      9596 days (26.27 yr)  
   first obs. used      1994-09-28  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57269  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:31:20  

Additional Information
 Jupiter MOID = 2.17924 au 
 T_jup = 3.380 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.875788731235823E-15 -4.787295703098584E-15 -4.843667177444305E-14 -4.310029278551803E-15 -7.347841689765549E-14 -2.175502218012274E-15
q -4.787295703098584E-15 1.24310139016527E-14 4.003390781974018E-13 1.050958173269095E-14 2.613221501971374E-13 6.006017725025007E-15
tp -4.843667177444305E-14 4.003390781974018E-13 2.111493385560181E-8 1.89371201120222E-11 4.857036185753834E-9 -5.738935203678501E-12
node -4.310029278551803E-15 1.050958173269095E-14 1.89371201120222E-11 3.274477959439366E-9 -3.260269470636802E-9 -7.693721885320161E-12
peri -7.347841689765549E-14 2.613221501971374E-13 4.857036185753834E-9 -3.260269470636802E-9 4.386204172509479E-9 6.495836920619841E-12
i -2.175502218012274E-15 6.006017725025007E-15 -5.738935203678501E-12 -7.693721885320161E-12 6.495836920619841E-12 2.74116298852155E-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 15.85   n/a E2021B55  

100254 (1994 SG4)          Discovered 1994-Sep-28 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1994 SG4 = 2003 UF203 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-16 18:41 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin