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 ]  
2711 Aleksandrov (1978 QB2)
Classification: Main-belt Asteroid          SPK-ID: 2002711
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0946187845840696 3.7484e-08  
a 3.006583101801044 1.653e-08 au
q 2.722103862957627 1.0965e-07 au
i 10.27288065860384 3.8778e-06 deg
node 157.57724104994 2.2191e-05 deg
peri 204.9831116272536 2.9887e-05 deg
M 348.3026111489253 2.0754e-05 deg
tp 2459062.372073642672
(2020-Jul-31.87207364)
0.00010988 TDB
period 1904.181077926229
5.21
1.5703e-05
4.299e-08
d
yr
n .1890576501222574 1.5591e-09 deg/d
Q 3.291062340644461 1.8094e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2407  
   data-arc span      18221 days (49.89 yr)  
   first obs. used      1970-01-07  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49684  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:28:57  

Additional Information
 Earth MOID = 1.72201 au 
 Jupiter MOID = 2.15282 au 
 T_jup = 3.220 
[ 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 11.7   n/a MPO435723  
diameter diameter 13.547 km 0.489 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.121   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

2711 Aleksandrov (1978 QB2)          Discovered 1978-Aug-31 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1978 QB2 = 1953 XM1 = 1970 AE1 = 1971 FV 
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-29 14:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin