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 ]  
85835 (1998 XB81)
Classification: Main-belt Asteroid          SPK-ID: 2085835
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1551458315845091 3.7724e-08  
a 2.137014935881215 9.5389e-09 au
q 1.805465976545408 8.5176e-08 au
i 3.302210792158427 4.526e-06 deg
node 95.78307563111754 6.0555e-05 deg
peri 266.5301666303816 6.454e-05 deg
M 15.05817545057694 2.8017e-05 deg
tp 2458952.771298914843
(2020-Apr-13.27129891)
8.8541e-05 TDB
period 1141.063367673695
3.12
7.64e-06
2.092e-08
d
yr
n .3154951865065461 2.1124e-09 deg/d
Q 2.468563895217023 1.1019e-08 au
  Orbit Determination Parameters
   # obs. used (total)      884  
   data-arc span      8643 days (23.66 yr)  
   first obs. used      1995-12-21  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58497  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:39:36  

Additional Information
 Earth MOID = .806354 au 
 Jupiter MOID = 2.98307 au 
 T_jup = 3.699 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO436375  
diameter diameter 1.459 km 0.161 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.275   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85835 (1998 XB81)          Discovered 1998-Dec-15 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 XB81 = 2000 HP4 = 2001 RN44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-31 06:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin