Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
4020 Dominique (1981 ET38)
Classification: Main-belt Asteroid          SPK-ID: 2004020
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1568270776609161 2.3272e-08  
a 2.777278203114637 9.8606e-09 au
q 2.341725778668809 6.4366e-08 au
i 9.547796873043685 4.2968e-07 deg
node 194.7941025687106 5.5586e-06 deg
peri 178.2397113274153 6.7569e-06 deg
M 60.33817113024149 5.302e-06 deg
tp 2459113.153960197906
(2020-Sep-20.65396020)
2.4636e-05 TDB
period 1690.547996699708
4.63
9.0033e-06
2.465e-08
d
yr
n .2129487010737305 1.1341e-09 deg/d
Q 3.212830627560467 1.1407e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2523  
   data-arc span      24830 days (67.98 yr)  
   first obs. used      1953-04-15  
   last obs. used      2021-04-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43447  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:13:43  

Additional Information
 Earth MOID = 1.34152 au 
 Jupiter MOID = 2.25391 au 
 T_jup = 3.297 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457101.5 (2015-Mar-20.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1600130717072869 2.3437e-08  
q 2.331792183569129 6.5127e-08 au
tp 2457421.744028382077
(2016-Feb-03.24402838)
2.4128e-05 TDB
node 194.9484583246356 5.5491e-06 deg
peri 177.9174836525801 6.6437e-06 deg
i 9.562780311049417 4.3125e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2523  
   data-arc span      24830 days (67.98 yr)  
   first obs. used      1953-04-15  
   last obs. used      2021-04-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43447  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:13:43  

Additional Information
 Jupiter MOID = 2.25391 au 
 T_jup = 3.297 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.492801969686862E-16 -1.514039429251175E-15 1.403222810175386E-14 4.027677144354274E-15 4.785395944198491E-14 9.473009647785072E-16
q -1.514039429251175E-15 4.241558423773626E-15 -8.186478404819189E-14 -1.297421906731783E-14 -1.426599517444849E-13 -2.721784354982209E-15
tp 1.403222810175386E-14 -8.186478404819189E-14 5.821733794355485E-10 5.152158066523543E-11 8.042034201656816E-11 2.830543433531117E-12
node 4.027677144354274E-15 -1.297421906731783E-14 5.152158066523543E-11 3.079279577413828E-11 -1.984766546985895E-11 1.459407357427421E-12
peri 4.785395944198491E-14 -1.426599517444849E-13 8.042034201656816E-11 -1.984766546985895E-11 4.41388631062791E-11 -8.704488229123681E-13
i 9.473009647785072E-16 -2.721784354982209E-15 2.830543433531117E-12 1.459407357427421E-12 -8.704488229123681E-13 1.859765234907037E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.97   n/a E2021B10  
diameter diameter 6.947 km 0.225 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.231   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4020 Dominique (1981 ET38)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 ET38 = 1983 TJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Aug-05 06:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin