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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1386047939561765 2.9136e-08  
a 2.741658570394751 9.8349e-09 au
q 2.361651549147001 7.8761e-08 au
i 4.732224461378404 4.4012e-06 deg
node 7.78032845688731 3.7722e-05 deg
peri 283.3664669021321 4.089e-05 deg
M 64.51542890595761 1.6694e-05 deg
tp 2458703.347376387066
(2019-Aug-07.84737639)		 7.6358e-05 TDB
period 1658.129633712746
4.54		 8.9221e-06
2.443e-08		 d
yr
n .2171120958702836 1.1682e-09 deg/d
Q 3.1216655916425 1.1198e-08 au
   Orbit Determination Parameters
   # obs. used (total)      3103  
   data-arc span      16886 days (46.23 yr)  
   first obs. used      1974-08-24  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39609  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:12:10  

Additional Information
 Earth MOID = 1.35118 au 
 Jupiter MOID = 2.07389 au 
 T_jup = 3.331 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456775.5 (2014-Apr-28.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .138771678380075 2.9e-08  
q 2.361493534365905 7.8441e-08 au
tp 2457048.020298694418
(2015-Jan-25.52029869)		 7.4258e-05 TDB
node 7.860886829197177 3.7674e-05 deg
peri 284.075511385332 4.086e-05 deg
i 4.735588774636769 4.4037e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      3103  
   data-arc span      16886 days (46.23 yr)  
   first obs. used      1974-08-24  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39609  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:12:10  

Additional Information
 Jupiter MOID = 2.07389 au 
 T_jup = 3.331 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.409975820058206E-16 -2.262007717610182E-15 2.404154415113844E-13 1.752463827637777E-15 2.320867837738633E-14 -1.475327377528712E-16
q -2.262007717610182E-15 6.153065259695628E-15 -5.430781148841012E-13 -5.316071487544723E-15 -4.325341206935182E-14 7.022423263696483E-16
tp 2.404154415113844E-13 -5.430781148841012E-13 5.514273517890286E-9 4.086007793631192E-12 1.18009868939632E-9 -1.426933588706385E-14
node 1.752463827637777E-15 -5.316071487544723E-15 4.086007793631192E-12 1.41932072184833E-9 -1.413366551660349E-9 2.471106807194771E-11
peri 2.320867837738633E-14 -4.325341206935182E-14 1.18009868939632E-9 -1.413366551660349E-9 1.669549545598191E-9 -2.459592272783327E-11
i -1.475327377528712E-16 7.022423263696483E-16 -1.426933588706385E-14 2.471106807194771E-11 -2.459592272783327E-11 1.939224177654773E-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. 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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