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JPL Small-Body Database Browser
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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 | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1328354361440559 3.1896e-08  
a 2.265864646387414 7.1796e-09 au
q 1.964877527841145 7.1914e-08 au
i 5.578620471939316 3.7402e-06 deg
node 241.8566283832495 3.6704e-05 deg
peri 232.8562871001637 3.9551e-05 deg
M 231.5113013340943 1.4208e-05 deg
tp 2459445.143350186110
(2021-Aug-18.64335019)
4.9564e-05 TDB
period 1245.802998466154
3.41
5.9212e-06
1.621e-08
d
yr
n .2889702468554304 1.3734e-09 deg/d
Q 2.566851764933684 8.1333e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1587  
   data-arc span      15583 days (42.66 yr)  
   first obs. used      1976-12-18  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51126  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:32:31  

Additional Information
 Earth MOID = .98717 au 
 Jupiter MOID = 2.54515 au 
 T_jup = 3.598 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456484.5 (2013-Jul-11.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1323122818305243 3.1848e-08  
q 1.966280281975898 7.1776e-08 au
tp 2456951.685265339516
(2014-Oct-21.18526534)
4.8705e-05 TDB
node 241.9331515030777 3.6656e-05 deg
peri 232.5004981480876 3.9548e-05 deg
i 5.58156445044771 3.7426e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1587  
   data-arc span      15583 days (42.66 yr)  
   first obs. used      1976-12-18  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51126  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:32:31  

Additional Information
 Jupiter MOID = 2.54515 au 
 T_jup = 3.598 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.014314110178981E-15 -2.277565852914834E-15 -7.6356199991531E-14 -3.347744568657227E-15 -3.716859710317908E-14 -1.12383647104856E-15
q -2.277565852914834E-15 5.151807663077189E-15 1.67064474711762E-13 7.391097538989381E-15 7.853641025535216E-14 2.639375698246817E-15
tp -7.6356199991531E-14 1.67064474711762E-13 2.372186728732741E-9 -1.00072109460577E-11 7.332312792890224E-10 -1.834893633430357E-12
node -3.347744568657227E-15 7.391097538989381E-15 -1.00072109460577E-11 1.343672819703873E-9 -1.339740146233514E-9 2.95911570137546E-12
peri -3.716859710317908E-14 7.853641025535216E-14 7.332312792890224E-10 -1.339740146233514E-9 1.564045269673242E-9 -3.49328934750427E-12
i -1.12383647104856E-15 2.639375698246817E-15 -1.834893633430357E-12 2.95911570137546E-12 -3.49328934750427E-12 1.400732911873097E-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 14.1   n/a MPO337280  
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. 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 0.265   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

[ show close-approach data ]
Alternate Designations
 1981 DQ2 = 1976 YR4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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