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 ]  
79139 (1991 SP)
Classification: Main-belt Asteroid          SPK-ID: 2079139
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1973138962359639 4.4392e-08  
a 2.275519492522891 1.0205e-08 au
q 1.826527875492316 1.0562e-07 au
i 6.367147633106174 3.739e-06 deg
node 76.87013062335213 3.7766e-05 deg
peri 268.0210004802352 3.8908e-05 deg
M 244.7603216458783 1.1135e-05 deg
tp 2459797.845875016211
(2022-Aug-06.34587502)
4.046e-05 TDB
period 1253.774021842089
3.43
8.434e-06
2.309e-08
d
yr
n .287133082779204 1.9315e-09 deg/d
Q 2.724511109553466 1.2218e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1019  
   data-arc span      10854 days (29.72 yr)  
   first obs. used      1991-09-15  
   last obs. used      2021-06-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53565  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:07:51  

Additional Information
 Earth MOID = .831936 au 
 Jupiter MOID = 2.70394 au 
 T_jup = 3.575 
[ 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 15.66   n/a MPO637104  
diameter diameter 2.582 km 0.485 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 5.450 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.133   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79139 (1991 SP)          Discovered 1991-Sep-30 by McNaught, R. H. at Siding Spring
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-21 21:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin