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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
77708 (2001 OS31)
Classification: Main-belt Asteroid          SPK-ID: 2077708
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .107681808910984 5.2168e-08  
a 3.097098198554728 2.4248e-08 au
q 2.763597062159405 1.5883e-07 au
i 10.7949436746115 4.2213e-06 deg
node 104.8501523529814 2.7005e-05 deg
peri 245.6825954025021 3.3749e-05 deg
M 130.9989936562239 2.1854e-05 deg
tp 2458276.070130250568
(2018-Jun-06.57013025)
0.00012019 TDB
period 1990.814935526834
5.45
2.338e-05
6.401e-08
d
yr
n .1808304697617373 2.1237e-09 deg/d
Q 3.43059933495005 2.686e-08 au
  Orbit Determination Parameters
   # obs. used (total)      958  
   data-arc span      7193 days (19.69 yr)  
   first obs. used      2000-04-28  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52552  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 12:14:21  

Additional Information
 Earth MOID = 1.77825 au 
 Jupiter MOID = 1.98921 au 
 T_jup = 3.187 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO287283  

77708 (2001 OS31)          Discovered 2001-Jul-22 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1954-Sep-17 02:42 00:02 Jupiter 1.97454752214753 1.97454715692144 1.97454788737362 3.96352261371735 3.85377355757473 2435002.612784355 1.99936688577309 115.221373792971 15.9549123939513 -89.1996462047544 3933749.58314578 T 24 CATAB v2.0f-lin.ifort 2020-Jan-29 12:14:37 2020-Jan-29 12:14
2015-Feb-04 01:40 < 00:01 Jupiter 1.99938638209623 1.99938591990424 1.99938684428834 3.46793090605905 3.34354038401572 2457057.569333981 0.189464548665645 49.1651507210691 16.688213572219 -75.6548535004237 3210158.58405204 T 24 CATAB v2.0f-lin.ifort 2020-Jan-29 12:14:37 2020-Jan-29 12:14
2085-Jul-07 05:04 00:02 Jupiter 1.98012431457504 1.98012391745834 1.98012471169197 3.86950663084509 3.75733375967412 2482778.711171887 2.34631895746019 142.402066917965 16.5284760808804 89.6366909322552 3749264.6266119 T 24 CATAB v2.0f-lin.ifort 2020-Jan-29 12:14:37 2020-Jan-29 12:14

Alternate Designations
 2001 OS31 = 2000 HG96 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-18 22:51 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin