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JPL Small-Body Database Browser
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3836 Lem (1979 SR9)
Classification: Main-belt Asteroid          SPK-ID: 2003836
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1463153205441433 2.4186e-08  
a 2.238441348294835 6.0883e-09 au
q 1.910923084899812 5.3208e-08 au
i 2.036472587325479 2.8802e-06 deg
node 78.15803775886613 0.00010933 deg
peri 204.6906552508687 0.0001103 deg
M 9.675465329996422 1.5081e-05 deg
tp 2458567.623440225220
(2019-Mar-25.12344023)
5.1239e-05 TDB
period 1223.255018260195
3.35
4.9907e-06
1.366e-08
d
yr
n .294296769378489 1.2007e-09 deg/d
Q 2.565959611689857 6.9792e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2684  
   data-arc span      25133 days (68.81 yr)  
   first obs. used      1951-02-04  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4405  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:54:10  

Additional Information
 Earth MOID = .894105 au 
 Jupiter MOID = 2.55963 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 13.8   n/a MPO435735  
diameter diameter 4.054 km 0.667 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
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 ]
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