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JPL Small-Body Database Browser
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80355 (1999 XL123)
Classification: Main-belt Asteroid          SPK-ID: 2080355
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .143935670646449 4.4896e-08  
a 2.25454197546888 8.5133e-09 au
q 1.930032964229197 1.0164e-07 au
i 5.369860834693799 4.9208e-06 deg
node 335.6999964026866 4.4806e-05 deg
peri 9.389929925285625 4.765e-05 deg
M 77.37993413807938 1.4405e-05 deg
tp 2458734.726442254018
(2019-Sep-08.22644225)
4.9537e-05 TDB
period 1236.476637700695
3.39
7.0036e-06
1.917e-08
d
yr
n .291149860032489 1.6491e-09 deg/d
Q 2.579050986708564 9.7387e-09 au
  Orbit Determination Parameters
   # obs. used (total)      571  
   data-arc span      7419 days (20.31 yr)  
   first obs. used      1999-10-12  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5567  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 18:57:26  

Additional Information
 Earth MOID = .922637 au 
 Jupiter MOID = 2.8089 au 
 T_jup = 3.605 
[ 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 16.2   n/a MPO493437  
diameter diameter 1.661 km 0.364 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.279   0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

80355 (1999 XL123)          Discovered 1999-Dec-07 by CSS at Catalina
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2115-Apr-16 12:11 00:03 Eunom 0.0382255236182936 0.038214937029229 0.0382361159281439 3.26562331991451 3.26562320746065 2493653.007347079 3.32963203063441 906.416765956822 27.3331401715193 54.466233601693 170025.002080771 T 20 CATAB v2.0f-lin.ifort 2020-Feb-23 18:57:39 2020-Feb-23 18:57
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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