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 ]  
85581 (1998 DZ20)
Classification: Main-belt Asteroid          SPK-ID: 2085581
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 .1634647629406982 5.7864e-08  
a 2.561530027784095 1.4194e-08 au
q 2.142810129026888 1.5393e-07 au
i 13.41926781304117 5.5265e-06 deg
node 336.8475076152404 1.5274e-05 deg
peri 349.4010645725924 2.0854e-05 deg
M 345.3682063423551 1.2369e-05 deg
tp 2459061.361502686988
(2020-Jul-30.86150269)
5.1321e-05 TDB
period 1497.433703616239
4.10
1.2446e-05
3.408e-08
d
yr
n .2404113111188932 1.9982e-09 deg/d
Q 2.980249926541302 1.6514e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1705  
   data-arc span      9643 days (26.40 yr)  
   first obs. used      1994-03-09  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46422  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:56:13  

Additional Information
 Earth MOID = 1.13303 au 
 Jupiter MOID = 2.38266 au 
 T_jup = 3.378 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457135.5 (2015-Apr-23.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1630844244892984 5.7919e-08  
q 2.142955738326291 1.5401e-07 au
tp 2457566.473893427013
(2016-Jun-26.97389343)
5.5713e-05 TDB
node 336.9044317649611 1.528e-05 deg
peri 349.8255467835385 2.0838e-05 deg
i 13.41719360031209 5.5261e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1705  
   data-arc span      9643 days (26.40 yr)  
   first obs. used      1994-03-09  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46422  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:56:13  

Additional Information
 Jupiter MOID = 2.38266 au 
 T_jup = 3.378 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.354574934974212E-15 -8.898990621861962E-15 1.806888903067521E-12 -1.803442692612231E-14 4.389036043302463E-13 -9.07573402214996E-15
q -8.898990621861962E-15 2.37188754247078E-14 -4.931499617214972E-12 4.712510207576197E-14 -1.205293513249975E-12 2.468070703153141E-14
tp 1.806888903067521E-12 -4.931499617214972E-12 3.103989430706153E-9 -1.582363245237742E-11 7.99223188683013E-10 -8.746168648560729E-12
node -1.803442692612231E-14 4.712510207576197E-14 -1.582363245237742E-11 2.334659747562629E-10 -2.298556799568174E-10 1.561414087125089E-11
peri 4.389036043302463E-13 -1.205293513249975E-12 7.99223188683013E-10 -2.298556799568174E-10 4.342143748915861E-10 -1.734330824010629E-11
i -9.07573402214996E-15 2.468070703153141E-14 -8.746168648560729E-12 1.561414087125089E-11 -1.734330824010629E-11 3.053833025914457E-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 13.8   n/a MPO385350  
diameter diameter 4.751 km 0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.236   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85581 (1998 DZ20)          Discovered 1998-Feb-22 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 DZ20 = 2002 AF119 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-28 04:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin