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175900 (1999 XM217)
Classification: Main-belt Asteroid          SPK-ID: 2175900
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2790966875992637 5.048e-08  
a 2.461261246719268 1.8974e-08 au
q 1.774331385443486 1.1987e-07 au
i 15.26513237177841 5.6801e-06 deg
node 105.1820939450782 2.2219e-05 deg
peri 234.0124392068855 2.7621e-05 deg
M 257.5359517934428 2.2292e-05 deg
tp 2459601.924621743784
(2022-Jan-22.42462174)
9.0992e-05 TDB
period 1410.376286679977
3.86
1.6309e-05
4.465e-08
d
yr
n .2552510300973929 2.9517e-09 deg/d
Q 3.14819110799505 2.427e-08 au
  Orbit Determination Parameters
   # obs. used (total)      379  
   data-arc span      7388 days (20.23 yr)  
   first obs. used      1999-12-13  
   last obs. used      2020-03-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56055  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 09:54:40  

Additional Information
 Earth MOID = .805135 au 
 Jupiter MOID = 2.33233 au 
 T_jup = 3.388 
[ 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 16.35   n/a E2021B55  
diameter diameter 1.708 km 0.235 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.183   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

175900 (1999 XM217)          Discovered 1999-Dec-13 by Spacewatch at Kitt Peak
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

[ show close-approach data ]
Alternate Designations
 1999 XM217 = 2002 LU34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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