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 ]  
85731 (1998 SP80)
Classification: Main-belt Asteroid          SPK-ID: 2085731
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1813942313529604 3.4785e-08  
a 2.279780731190459 9.7212e-09 au
q 1.866241657802875 8.1473e-08 au
i 4.594406160893599 3.8588e-06 deg
node 243.761758853149 5.3265e-05 deg
peri 128.3343421393647 5.4839e-05 deg
M 100.9710746892013 1.4754e-05 deg
tp 2458647.859228637617
(2019-Jun-13.35922864)
5.0191e-05 TDB
period 1257.297479314984
3.44
8.0418e-06
2.202e-08
d
yr
n .28632841942556 1.8314e-09 deg/d
Q 2.693319804578042 1.1485e-08 au
  Orbit Determination Parameters
   # obs. used (total)      800  
   data-arc span      7825 days (21.42 yr)  
   first obs. used      1998-08-27  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50082  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:37:50  

Additional Information
 Earth MOID = .87095 au 
 Jupiter MOID = 2.78838 au 
 T_jup = 3.580 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456924.5 (2014-Sep-24.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1822889508948999 3.4959e-08  
q 1.863642664948086 8.1946e-08 au
tp 2457389.211532640236
(2016-Jan-01.71153264)
4.5439e-05 TDB
node 243.8277400372017 5.3354e-05 deg
peri 127.9783461647729 5.4887e-05 deg
i 4.590178829601722 3.8567e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      800  
   data-arc span      7825 days (21.42 yr)  
   first obs. used      1998-08-27  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50082  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:37:50  

Additional Information
 Jupiter MOID = 2.78838 au 
 T_jup = 3.580 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.222120991232256E-15 -2.851903037023122E-15 -3.602774128490919E-13 3.512017171136453E-15 -1.095865026831043E-13 -2.819272906130086E-16
q -2.851903037023122E-15 6.715162775736392E-15 9.915760789475501E-13 -8.412316704714099E-15 2.919071625667483E-13 8.865890249488406E-16
tp -3.602774128490919E-13 9.915760789475501E-13 2.064683936732158E-9 -1.303085094780988E-11 6.010907520081265E-10 7.970579343769932E-13
node 3.512017171136453E-15 -8.412316704714099E-15 -1.303085094780988E-11 2.8466789677632E-9 -2.841046111609707E-9 2.153129893648246E-11
peri -1.095865026831043E-13 2.919071625667483E-13 6.010907520081265E-10 -2.841046111609707E-9 3.012609749212385E-9 -2.126403479942545E-11
i -2.819272906130086E-16 8.865890249488406E-16 7.970579343769932E-13 2.153129893648246E-11 -2.126403479942545E-11 1.48743005346312E-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 15.7   n/a MPO344892  
diameter diameter 2.721 km 0.949 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.104   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85731 (1998 SP80)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-27 23:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin