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 ]  
20229 (1997 XX4)
Classification: Main-belt Asteroid          SPK-ID: 2020229
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1278694612304795 3.8302e-08  
a 2.370875649110811 8.775e-09 au
q 2.067713057214549 9.1271e-08 au
i 8.834781631576748 3.7046e-06 deg
node 126.9600789946293 2.8016e-05 deg
peri 25.2787421369735 3.3227e-05 deg
M 93.68006004292724 1.6074e-05 deg
tp 2458853.518555491677
(2020-Jan-05.01855549)
5.9667e-05 TDB
period 1333.403500870485
3.65
7.4027e-06
2.027e-08
d
yr
n .2699857918214415 1.4989e-09 deg/d
Q 2.674038241007074 9.8971e-09 au
  Orbit Determination Parameters
   # obs. used (total)      944  
   data-arc span      14723 days (40.31 yr)  
   first obs. used      1980-03-21  
   last obs. used      2020-07-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55572  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:15:30  

Additional Information
 Earth MOID = 1.08252 au 
 Jupiter MOID = 2.33095 au 
 T_jup = 3.518 
[ 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 15.59   n/a E2021B10  
diameter diameter 2.406 km 0.323 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.121   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20229 (1997 XX4)          Discovered 1997-Dec-06 by ODAS at Caussols
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 XX4 = 1991 JV1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-21 12:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin