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24298 (1999 XC221)
Classification: Main-belt Asteroid          SPK-ID: 2024298
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 .1797623707214442 1.8749e-08  
a 2.697054877405675 8.4457e-09 au
q 2.212225898677397 4.9314e-08 au
i 11.99275803749543 3.2816e-07 deg
node 236.2697071315333 4.8145e-06 deg
peri 124.7182590929783 9.8146e-06 deg
M 25.60087231302078 5.6461e-06 deg
tp 2459085.450333411247
(2020-Aug-23.95033341)
2.5291e-05 TDB
period 1617.830809260576
4.43
7.5992e-06
2.081e-08
d
yr
n .2225201782160007 1.0452e-09 deg/d
Q 3.181883856133953 9.9639e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2234  
   data-arc span      29450 days (80.63 yr)  
   first obs. used      1940-08-02  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41343  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:32:51  

Additional Information
 Earth MOID = 1.23426 au 
 Jupiter MOID = 2.39425 au 
 T_jup = 3.315 
[ 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 12.88   n/a MPCxxxxx  
diameter diameter 7.776 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.190   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

24298 (1999 XC221)          Discovered 1999-Dec-14 by LINEAR at Socorro
Reference: 20010408/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XC221 = 1940 PA = 1976 YP4 = 1989 UZ7 = 1998 VC18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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