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3660 Lazarev (1978 QX2)
Classification: Outer Main-belt Asteroid          SPK-ID: 2003660
[ 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08131183074418226 3.4955e-08  
a 3.222550857241423 1.862e-08 au
q 2.960519347372889 1.1427e-07 au
i 7.785367560938229 4.1936e-06 deg
node 354.9101884169268 2.5698e-05 deg
peri 215.708576428334 3.5324e-05 deg
M 246.3549748718843 2.5489e-05 deg
tp 2459867.531010776503
(2022-Oct-15.03101078)		 0.00015146 TDB
period 2112.99318741699
5.79		 1.8314e-05
5.014e-08		 d
yr
n .1703744253146783 1.4767e-09 deg/d
Q 3.484582367109957 2.0135e-08 au
   Orbit Determination Parameters
   # obs. used (total)      3657  
   data-arc span      25607 days (70.11 yr)  
   first obs. used      1950-12-09  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37079  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:12:20  

Additional Information
 Earth MOID = 1.95933 au 
 Jupiter MOID = 1.50757 au 
 T_jup = 3.169 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456990.5 (2014-Nov-29.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08385783763674882 3.4407e-08  
q 2.948812469190852 1.1249e-07 au
tp 2457765.429660011806
(2017-Jan-11.92966001)		 0.00014436 TDB
node 354.9713992111243 2.5682e-05 deg
peri 217.5987329851615 3.5117e-05 deg
i 7.793305821844056 4.1959e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      3657  
   data-arc span      25607 days (70.11 yr)  
   first obs. used      1950-12-09  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37079  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:12:20  

Additional Information
 Jupiter MOID = 1.50757 au 
 T_jup = 3.169 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.183841186628324E-15 -3.826360042991223E-15 -1.212172083009289E-12 -2.286255386021867E-15 -1.856061300307593E-13 -9.131645568397235E-17
q -3.826360042991223E-15 1.265500815860454E-14 4.401795512676847E-12 7.361226565475245E-15 6.612503034166157E-13 6.870296743071728E-16
tp -1.212172083009289E-12 4.401795512676847E-12 2.08412006440714E-8 5.353685681264165E-12 3.468238175914249E-9 2.246109570246816E-12
node -2.286255386021867E-15 7.361226565475245E-15 5.353685681264165E-12 6.595521564976444E-10 -6.523723057862719E-10 -6.531012413078109E-12
peri -1.856061300307593E-13 6.612503034166157E-13 3.468238175914249E-9 -6.523723057862719E-10 1.23322721153026E-9 6.806760632469176E-12
i -9.131645568397235E-17 6.870296743071728E-16 2.246109570246816E-12 -6.531012413078109E-12 6.806760632469176E-12 1.760520232961519E-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 11.79   n/a E2021B10  
diameter diameter 25.830 km 0.156 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.9974 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.037   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3660 Lazarev (1978 QX2)          Discovered 1978-Aug-31 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1978 QX2 = 1979 WR2 = 1982 GF = 1985 XM 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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