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 ]  
85161 (1988 SA2)
Classification: Main-belt Asteroid          SPK-ID: 2085161
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .211114601417709 3.3663e-08  
a 2.213921683838751 8.6367e-09 au
q 1.74653048998511 7.4422e-08 au
i 6.39847128533706 4.3815e-06 deg
node 91.77585425477719 3.8633e-05 deg
peri 217.3375228322089 4.065e-05 deg
M 10.80047470676615 1.4904e-05 deg
tp 2459360.402082241829
(2021-May-25.90208224)
4.9691e-05 TDB
period 1203.211038937069
3.29
7.0407e-06
1.928e-08
d
yr
n .2991993826104091 1.7508e-09 deg/d
Q 2.681312877692391 1.046e-08 au
  Orbit Determination Parameters
   # obs. used (total)      602  
   data-arc span      12015 days (32.90 yr)  
   first obs. used      1988-09-15  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58376  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:53:44  

Additional Information
 Earth MOID = .736219 au 
 Jupiter MOID = 2.57979 au 
 T_jup = 3.618 
[ 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 16.34   n/a E2021B10  

85161 (1988 SA2)          Discovered 1988-Sep-16 by Bus, S. J. at Cerro Tololo
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 2021-Sep-22 06:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin