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24171 (1999 XE1)
Classification: Main-belt Asteroid          SPK-ID: 2024171
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1178499052023125 1.2577e-08  
a 2.526331398889072 1.0072e-08 au
q 2.22860348302037 3.1187e-08 au
i 4.156787010609793 7.0044e-07 deg
node 190.0508343074586 1.0023e-05 deg
peri 224.7714093366324 1.2267e-05 deg
M 114.1084907689464 7.5576e-06 deg
tp 2458735.610896282128
(2019-Sep-09.11089628)
3.0256e-05 TDB
period 1466.675058189266
4.02
8.7711e-06
2.401e-08
d
yr
n .245453141096195 1.4679e-09 deg/d
Q 2.824059314757775 1.1259e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1802  
   data-arc span      10676 days (29.23 yr)  
   first obs. used      1991-12-30  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4588  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:32:12  

Additional Information
 Earth MOID = 1.24125 au 
 Jupiter MOID = 2.50173 au 
 T_jup = 3.440 
[ 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 13.71   n/a E2021B10  
diameter diameter 4.564 km 0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.370   0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

24171 (1999 XE1)          Discovered 1999-Dec-02 by Kobayashi, T. at Oizumi
Reference: 20010408/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XE1 = 1991 YS = 1997 GL42 = 1998 QH7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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