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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 ]

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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1329958570994846 2.609e-08  
a 2.265615098971789 6.1581e-09 au
q 1.964297677026502 6.0783e-08 au
i 5.578757481599411 3.1324e-06 deg
node 241.8531034416567 3.3267e-05 deg
peri 232.8951300444422 3.5986e-05 deg
M 289.2895374013992 1.4109e-05 deg
tp 2459445.157650094768
(2021-Aug-18.65765009)
4.9117e-05 TDB
period 1245.597197321396
3.41
5.0784e-06
1.39e-08
d
yr
n .2890179913491815 1.1784e-09 deg/d
Q 2.566932520917076 6.9771e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2111  
   data-arc span      16099 days (44.08 yr)  
   first obs. used      1976-12-18  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46197  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:11:52  

Additional Information
 Earth MOID = .986487 au 
 Jupiter MOID = 2.54453 au 
 T_jup = 3.598 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457283.5 (2015-Sep-18.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1325747526446457 2.5944e-08  
q 1.965426564878578 6.0423e-08 au
tp 2456951.105366531724
(2014-Oct-20.60536653)
4.7263e-05 TDB
node 241.8994411703256 3.3232e-05 deg
peri 232.3390602044482 3.6002e-05 deg
i 5.581056099646734 3.1348e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2111  
   data-arc span      16099 days (44.08 yr)  
   first obs. used      1976-12-18  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46197  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:11:52  

Additional Information
 Jupiter MOID = 2.54453 au 
 T_jup = 3.598 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.730999377578762E-16 -1.561896406246081E-15 1.240080143129377E-13 1.462961708435523E-15 4.650471575800339E-14 -5.086552501018673E-16
q -1.561896406246081E-15 3.650935948274433E-15 -2.509405017501321E-13 -3.234042651781122E-15 -9.570963109814736E-14 1.274142966020057E-15
tp 1.240080143129377E-13 -2.509405017501321E-13 2.233747494349191E-9 6.078148489971547E-13 6.643256254934659E-10 3.132332466179781E-13
node 1.462961708435523E-15 -3.234042651781122E-15 6.078148489971547E-13 1.104384562266828E-9 -1.098589043084738E-9 -2.439915189676434E-11
peri 4.650471575800339E-14 -9.570963109814736E-14 6.643256254934659E-10 -1.098589043084738E-9 1.296129631037213E-9 2.437566654831905E-11
i -5.086552501018673E-16 1.274142966020057E-15 3.132332466179781E-13 -2.439915189676434E-11 2.437566654831905E-11 9.826711181819825E-12

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 14.20   n/a E2021B10  
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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2051-Apr-25 04:23 < 00:01 Thisb 0.0061385084399131 0.00613490491600029 0.00614211257491092 4.69242062812599 4.69242039141688 2470286.682790919 0.653064084269105 204.957058009183 37.2617659896584 29.3175043761265 12675.8630379659 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 01:11:58 2021-Feb-24 01:11
2153-May-04 20:55 < 00:01 Juno 0.0374203267386077 0.037414801069309 0.0374258563515788 5.44447702787025 5.44447696815542 2507551.371782014 0.610136344999545 669.696893261796 34.9472589978926 -65.8800558875571 146158.772997025 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 01:11:58 2021-Feb-24 01:11

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