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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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1328354706880502 2.6455e-08  
a 2.265864649576984 6.2492e-09 au
q 1.964877452335012 6.1472e-08 au
i 5.578623937139441 3.1502e-06 deg
node 241.8566574124768 3.4067e-05 deg
peri 232.8562398221344 3.672e-05 deg
M 231.511319099403 1.4069e-05 deg
tp 2459445.143289646984
(2021-Aug-18.64328965)
4.9214e-05 TDB
period 1245.803001096657
3.41
5.1538e-06
1.411e-08
d
yr
n .2889702462452721 1.1955e-09 deg/d
Q 2.566851846818957 7.0793e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2004  
   data-arc span      16037 days (43.91 yr)  
   first obs. used      1976-12-18  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46444  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:13:08  

Additional Information
 Earth MOID = .98717 au 
 Jupiter MOID = 2.54515 au 
 T_jup = 3.598 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457141.5 (2015-Apr-29.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1326334456692634 2.6323e-08  
q 1.965637766637627 6.1197e-08 au
tp 2456951.288535413269
(2014-Oct-20.78853541)
4.7253e-05 TDB
node 241.9035314989231 3.4035e-05 deg
peri 232.4027831915002 3.6725e-05 deg
i 5.58057984891854 3.1524e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2004  
   data-arc span      16037 days (43.91 yr)  
   first obs. used      1976-12-18  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46444  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:13:08  

Additional Information
 Jupiter MOID = 2.54515 au 
 T_jup = 3.598 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.929078182853909E-16 -1.60496765486287E-15 1.228346276520646E-13 1.56677806155145E-15 4.456794110893635E-14 -5.064825734698289E-16
q -1.60496765486287E-15 3.745070208415214E-15 -2.484091763068633E-13 -3.404217195906429E-15 -9.172581218460345E-14 1.258943624152699E-15
tp 1.228346276520646E-13 -2.484091763068633E-13 2.232805684180501E-9 2.018735485372049E-12 6.625186870872637E-10 3.646875315555448E-13
node 1.56677806155145E-15 -3.404217195906429E-15 2.018735485372049E-12 1.158348490568662E-9 -1.151885272155792E-9 -2.202109557434554E-11
peri 4.456794110893635E-14 -9.172581218460345E-14 6.625186870872637E-10 -1.151885272155792E-9 1.348698735593912E-9 2.202383399912705E-11
i -5.064825734698289E-16 1.258943624152699E-15 3.646875315555448E-13 -2.202109557434554E-11 2.202383399912705E-11 9.937389504372963E-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 14.1   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. 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

[ hide close-approach data ]
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 29 CATAB v2.0f-lin.ifort 2020-Dec-18 02:13:13 2020-Dec-18 02:13
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 29 CATAB v2.0f-lin.ifort 2020-Dec-18 02:13:13 2020-Dec-18 02:13

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