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24222 (1999 XW74)
Classification: Main-belt Asteroid          SPK-ID: 2024222
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2129978000323243 4.1387e-08  
a 2.729413790567655 1.2595e-08 au
q 2.148054657798857 1.1517e-07 au
i 7.768346316700334 4.3577e-06 deg
node 256.4826000498405 3.2002e-05 deg
peri 97.09697221779294 3.3406e-05 deg
M 345.9615987019963 1.2454e-05 deg
tp 2459460.727002127379
(2021-Sep-03.22700213)
5.7178e-05 TDB
period 1647.033752279491
4.51
1.14e-05
3.121e-08
d
yr
n .2185747556792694 1.5129e-09 deg/d
Q 3.310772923336453 1.5278e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1219  
   data-arc span      13108 days (35.89 yr)  
   first obs. used      1985-09-19  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48364  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 23:01:14  

Additional Information
 Earth MOID = 1.15929 au 
 Jupiter MOID = 2.22881 au 
 T_jup = 3.309 
[ 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 14.08   n/a MPO636422  
diameter diameter 4.444 km 1.344 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.7824 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Galad, A. (2009) Minor Planet Bull. 36, 42-44.]
geometric albedo albedo 0.187   0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

24222 (1999 XW74)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20010408/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XW74 = 1985 SU2 = 1994 SJ13 = 1998 MH26 = 2000 AJ71 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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