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3602 Lazzaro (1981 DQ2)
Classification: Main-belt Asteroid          SPK-ID: 2003602
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1329958758638392 1.4591e-08  
a 2.265615098657457 5.95e-09 au
q 1.96429763424117 3.4231e-08 au
i 5.578755155541732 7.5247e-07 deg
node 241.8530957268327 7.338e-06 deg
peri 232.8951455378939 8.1771e-06 deg
M 289.2895311695808 5.31e-06 deg
tp 2459445.157671605896
(2021-Aug-18.65767161)
1.8964e-05 TDB
period 1245.597197062174
3.41
4.9068e-06
1.343e-08
d
yr
n .2890179914093292 1.1385e-09 deg/d
Q 2.566932563073744 6.7414e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2190  
   data-arc span      16163 days (44.25 yr)  
   first obs. used      1976-12-18  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46512  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:05:39  

Additional Information
 Earth MOID = .986487 au 
 Jupiter MOID = 2.54453 au 
 T_jup = 3.598 
[ 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 14.21   n/a MPCxxxxx  
diameter diameter 4.091 km 0.142 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 4.939 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.]
geometric albedo albedo 0.265   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3602 Lazzaro (1981 DQ2)          Discovered 1981-Feb-28 by Bus, S. J. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 DQ2 = 1976 YR4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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