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 ]  
3836 Lem (1979 SR9)
Classification: Main-belt Asteroid          SPK-ID: 2003836
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1459478591001386 1.0945e-08  
a 2.238782503734739 5.61e-09 au
q 1.912036990323805 2.389e-08 au
i 2.036179317738167 4.1311e-07 deg
node 78.15485100448579 6.3047e-06 deg
peri 204.8275952927765 8.2213e-06 deg
M 243.7806013700528 5.0685e-06 deg
tp 2459791.495734966949
(2022-Jul-30.99573497)
1.7898e-05 TDB
period 1223.534678929753
3.35
4.5989e-06
1.259e-08
d
yr
n .2942295026037989 1.1059e-09 deg/d
Q 2.565528017145672 6.4288e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3296  
   data-arc span      25666 days (70.27 yr)  
   first obs. used      1951-02-04  
   last obs. used      2021-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42764  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:10:25  

Additional Information
 Earth MOID = .895552 au 
 Jupiter MOID = 2.55901 au 
 T_jup = 3.621 
[ 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 13.82   n/a E2021B10  
diameter diameter 4.054 km 0.667 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 1.00 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.367   0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

3836 Lem (1979 SR9)          Discovered 1979-Sep-22 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1979 SR9 = 1985 JC1 = 1985 JH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-29 07:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin