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3439 Lebofsky (1983 RL2)
Classification: Main-belt Asteroid          SPK-ID: 2003439
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1386047942992786 2.9239e-08  
a 2.741658570252251 9.8787e-09 au
q 2.361651548083584 7.9121e-08 au
i 4.732224792185432 4.4276e-06 deg
node 7.78032601580246 3.7887e-05 deg
peri 283.3664695207025 4.1057e-05 deg
M 64.51542879120214 1.6704e-05 deg
tp 2458703.347376938787
(2019-Aug-07.84737694)
7.6408e-05 TDB
period 1658.129633583473
4.54
8.9618e-06
2.454e-08
d
yr
n .2171120958872104 1.1734e-09 deg/d
Q 3.121665592420919 1.1248e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3064  
   data-arc span      16869 days (46.18 yr)  
   first obs. used      1974-08-24  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39754  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:00:19  

Additional Information
 Earth MOID = 1.35118 au 
 Jupiter MOID = 2.07389 au 
 T_jup = 3.331 
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Orbital Elements at Epoch 2456751.5 (2014-Apr-04.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1387590103356466 2.9107e-08  
q 2.361483328150527 7.8809e-08 au
tp 2457048.041644659666
(2015-Jan-25.54164466)
7.4348e-05 TDB
node 7.86113424637897 3.7838e-05 deg
peri 284.0808087962478 4.1028e-05 deg
i 4.735629051163819 4.43e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3064  
   data-arc span      16869 days (46.18 yr)  
   first obs. used      1974-08-24  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39754  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:00:19  

Additional Information
 Jupiter MOID = 2.07389 au 
 T_jup = 3.331 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.471943538739949E-16 -2.280918669447729E-15 2.492858941071244E-13 1.898113597439784E-15 2.569457094069743E-14 -1.637930187281277E-16
q -2.280918669447729E-15 6.210866668990369E-15 -5.702393759970017E-13 -5.783871996964966E-15 -5.086164068847864E-14 7.564787536742596E-16
tp 2.492858941071244E-13 -5.702393759970017E-13 5.527559394939942E-9 3.549187006984037E-12 1.184564053827329E-9 6.383342803691413E-14
node 1.898113597439784E-15 -5.783871996964966E-15 3.549187006984037E-12 1.431741987154498E-9 -1.425857407081433E-9 2.301125787218235E-11
peri 2.569457094069743E-14 -5.086164068847864E-14 1.184564053827329E-9 -1.425857407081433E-9 1.683272634398837E-9 -2.288516310380525E-11
i -1.637930187281277E-16 7.564787536742596E-16 6.383342803691413E-14 2.301125787218235E-11 -2.288516310380525E-11 1.96251198156045E-11

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 12.3   n/a MPO452211  
diameter diameter 8.762 km 0.253 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.969 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.303   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3439 Lebofsky (1983 RL2)          Discovered 1983-Sep-04 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1983 RL2 = 1974 QR1 = 1979 UN4 = 1981 AB3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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