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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 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08131182794648173 3.4575e-08  
a 3.222550851978479 1.848e-08 au
q 2.960519351553617 1.1333e-07 au
i 7.785367589872279 4.121e-06 deg
node 354.9101880912629 2.5676e-05 deg
peri 215.7085776280594 3.5249e-05 deg
M 246.3549746777001 2.5449e-05 deg
tp 2459867.531010282200
(2022-Oct-15.03101028)		 0.00015126 TDB
period 2112.993182240704
5.79		 1.8175e-05
4.976e-08		 d
yr
n .1703744257320515 1.4655e-09 deg/d
Q 3.484582352403341 1.9982e-08 au
   Orbit Determination Parameters
   # obs. used (total)      3751  
   data-arc span      25673 days (70.29 yr)  
   first obs. used      1950-12-09  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3672  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:08:23  

Additional Information
 Earth MOID = 1.95933 au 
 Jupiter MOID = 1.50757 au 
 T_jup = 3.169 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457033.5 (2015-Jan-11.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08383984942536025 3.4055e-08  
q 2.949038402291831 1.1168e-07 au
tp 2457765.224567794706
(2017-Jan-11.72456779)		 0.00014399 TDB
node 354.9702815876568 2.5659e-05 deg
peri 217.5573483441939 3.5033e-05 deg
i 7.793284127296884 4.1232e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      3751  
   data-arc span      25673 days (70.29 yr)  
   first obs. used      1950-12-09  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3672  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:08:23  

Additional Information
 Jupiter MOID = 1.50757 au 
 T_jup = 3.169 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.159772040289287E-15 -3.759924690703564E-15 -1.16254548749666E-12 -2.093211031445429E-15 -1.754562909584572E-13 -6.036567938289579E-17
q -3.759924690703564E-15 1.247247758755263E-14 4.266915620139903E-12 6.815776962497722E-15 6.336500856250612E-13 5.682299707237346E-16
tp -1.16254548749666E-12 4.266915620139903E-12 2.073234313199372E-8 5.065677903305029E-12 3.44543820004034E-9 2.360717560045028E-12
node -2.093211031445429E-15 6.815776962497722E-15 5.065677903305029E-12 6.584035460048322E-10 -6.512978867233484E-10 -7.114954550798887E-12
peri -1.754562909584572E-13 6.336500856250612E-13 3.44543820004034E-9 -6.512978867233484E-10 1.227342166136269E-9 7.405841544125682E-12
i -6.036567938289579E-17 5.682299707237346E-16 2.360717560045028E-12 -7.114954550798887E-12 7.405841544125682E-12 1.700109839687436E-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

[ show close-approach data ]
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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