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 ]  
20718 (1999 XZ97)
Classification: Outer Main-belt Asteroid          SPK-ID: 2020718
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1198847309857401 4.3256e-08  
a 3.424014087083699 2.5124e-08 au
q 3.013527079362286 1.5372e-07 au
i 11.89452672019677 4.5649e-06 deg
node 76.54447874347244 2.1113e-05 deg
peri 157.0674508208591 2.723e-05 deg
M 292.3021207405317 1.9123e-05 deg
tp 2459435.685387382019
(2021-Aug-09.18538738)
0.00012439 TDB
period 2314.204538920107
6.34
2.5471e-05
6.974e-08
d
yr
n .1555610119786513 1.7122e-09 deg/d
Q 3.834501094805113 2.8136e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1618  
   data-arc span      12118 days (33.18 yr)  
   first obs. used      1986-10-31  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47191  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 01:24:37  

Additional Information
 Earth MOID = 2.0058 au 
 Jupiter MOID = 1.20966 au 
 T_jup = 3.096 
[ 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 12.3   n/a MPO435892  
diameter diameter 23.030 km 0.274 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20718 (1999 XZ97)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XZ97 = 1998 UG24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-29 21:39 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin