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JPL Small-Body Database Browser
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49858 (1999 XZ99)
Classification: Main-belt Asteroid          SPK-ID: 2049858
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2969851588556807 4.6591e-08  
a 2.459221255999301 1.248e-08 au
q 1.728869040625082 1.1063e-07 au
i 6.672825887848131 5.0672e-06 deg
node 76.69046717164433 3.8562e-05 deg
peri 96.40273149810488 3.9703e-05 deg
M 313.7445425946955 1.1533e-05 deg
tp 2458781.490305015141
(2019-Oct-24.99030501)
4.6189e-05 TDB
period 1408.623186547033
3.86
1.0722e-05
2.936e-08
d
yr
n .2555687024309676 1.9454e-09 deg/d
Q 3.18957347137352 1.6186e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1255  
   data-arc span      9997 days (27.37 yr)  
   first obs. used      1991-11-29  
   last obs. used      2019-04-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50686  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:52:33  

Additional Information
 Earth MOID = .749969 au 
 Jupiter MOID = 1.8157 au 
 T_jup = 3.420 
[ 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 14.8   n/a MPO319678  
diameter diameter 4.339 km 1.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.106   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

49858 (1999 XZ99)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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