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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
46027 (2001 DG21)
Classification: Main-belt Asteroid          SPK-ID: 2046027
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2546973649358737 3.9735e-08  
a 2.748511128668121 1.7846e-08 au
q 2.048472586699426 1.119e-07 au
i 15.8571497427952 5.545e-06 deg
node 126.439269743644 2.3315e-05 deg
peri 158.1061456387517 2.7211e-05 deg
M 263.9554370195554 1.5687e-05 deg
tp 2459044.532706508142
(2020-Jul-14.03270651)
7.4825e-05 TDB
period 1664.350061913218
4.56
1.621e-05
4.438e-08
d
yr
n .2163006498681951 2.1066e-09 deg/d
Q 3.448549670636815 2.2391e-08 au
  Orbit Determination Parameters
   # obs. used (total)      776  
   data-arc span      14533 days (39.79 yr)  
   first obs. used      1979-07-24  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59759  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:32:49  

Additional Information
 Earth MOID = 1.03944 au 
 Jupiter MOID = 1.80748 au 
 T_jup = 3.245 
[ show covariance matrix ]

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 14.4   n/a MPO337627  
diameter diameter 8.206 km 0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46027 (2001 DG21)          Discovered 2001-Feb-16 by LINEAR at Socorro
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 DG21 = 1979 OS1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin