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 ]  
2771 Polzunov (1978 SP7)
Classification: Main-belt Asteroid          SPK-ID: 2002771
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2276419254303386 1.1625e-08  
a 2.67689974320707 1.0655e-08 au
q 2.067525131479434 3.3605e-08 au
i 13.96019011787897 2.9725e-07 deg
node 207.3623185550094 3.4752e-06 deg
peri 116.7068171525319 5.8733e-06 deg
M 259.8083768396899 9.0905e-06 deg
tp 2459645.720853275655
(2022-Mar-07.22085328)
4.2186e-05 TDB
period 1599.729619339361
4.38
9.5511e-06
2.615e-08
d
yr
n .2250380287067942 1.3436e-09 deg/d
Q 3.286274354934707 1.308e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2377  
   data-arc span      28286 days (77.44 yr)  
   first obs. used      1943-10-05  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41362  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:14:26  

Additional Information
 Earth MOID = 1.09769 au 
 Jupiter MOID = 2.29808 au 
 T_jup = 3.299 
[ 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 12.52   n/a E2021B10  
diameter diameter 11.332 km 0.189 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 11.66 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:
[Stephens, R.D. (2005) Minor Planet Bull. 32, 2-3.]
[Chiorny, V.G.; Shevchenko, V.G.; Krugly, Yu.N.; Velichko, F.P.; Gaftonyuk, N.M. (2007) Planet. Space Sci. 55, 986-997.]
geometric albedo albedo 0.218   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2771 Polzunov (1978 SP7)          Discovered 1978-Sep-26 by Zhuravleva, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1978 SP7 = 1943 TG = 1981 EK6 = 1982 NB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-19 23:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin