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 ]  
56950 (2000 SA2)
Classification: Mars-crossing Asteroid          SPK-ID: 2056950
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2810644561909166 2.8929e-08  
a 2.300133171831759 9.5674e-09 au
q 1.653647492724177 6.7284e-08 au
i 22.07595880189047 5.885e-06 deg
node 23.15273585000221 9.8022e-06 deg
peri 266.6176870467177 1.5236e-05 deg
M 270.2013555174723 1.2356e-05 deg
tp 2459318.330213066296
(2021-Apr-13.83021307)
4.4773e-05 TDB
period 1274.171535252175
3.49
7.9498e-06
2.177e-08
d
yr
n .2825365267077257 1.7628e-09 deg/d
Q 2.94661885093934 1.2256e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1265  
   data-arc span      7748 days (21.21 yr)  
   first obs. used      1999-02-11  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51432  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:16:01  

Additional Information
 Earth MOID = .802764 au 
 Jupiter MOID = 2.58006 au 
 T_jup = 3.445 
[ 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 14.5   n/a MPO313833  
diameter diameter 2.490 km 0.308 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 4.89149 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.471   0.132 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

56950 (2000 SA2)          Discovered 2000-Sep-20 by LINEAR at Socorro
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 2000 SA2 = 1999 CB125 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-04 13:22 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin