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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2129977999799867 4.1572e-08  
a 2.729413790936739 1.4365e-08 au
q 2.148054658232178 1.153e-07 au
i 7.768344918916232 4.5867e-06 deg
node 256.4826049852409 3.2358e-05 deg
peri 97.09696771394637 3.4413e-05 deg
M 345.9615981485188 1.5951e-05 deg
tp 2459460.727004672618
(2021-Sep-03.22700467)
7.3287e-05 TDB
period 1647.033752613571
4.51
1.3002e-05
3.56e-08
d
yr
n .2185747556349343 1.7255e-09 deg/d
Q 3.3107729236413 1.7425e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1136  
   data-arc span      13065 days (35.77 yr)  
   first obs. used      1985-09-19  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49669  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:25:46  

Additional Information
 Earth MOID = 1.15929 au 
 Jupiter MOID = 2.22881 au 
 T_jup = 3.309 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457498.5 (2016-Apr-20.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2124874123183375 4.159e-08  
q 2.148295489691098 1.1522e-07 au
tp 2457817.045356484937
(2017-Mar-04.54535649)
6.672e-05 TDB
node 256.5153354422486 3.2327e-05 deg
peri 97.55833079213987 3.4384e-05 deg
i 7.772970663256482 4.5894e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1136  
   data-arc span      13065 days (35.77 yr)  
   first obs. used      1985-09-19  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49669  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 05:25:46  

Additional Information
 Jupiter MOID = 2.22881 au 
 T_jup = 3.309 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.729739320836543E-15 -4.770587443597956E-15 7.2669356172355E-13 1.055875901177138E-14 1.492544031469968E-13 9.11902474357855E-16
q -4.770587443597956E-15 1.327664728832712E-14 -1.648836197133956E-12 -2.943535783778429E-14 -3.513022466886836E-13 -1.854990907142398E-15
tp 7.2669356172355E-13 -1.648836197133956E-12 4.451622353435533E-9 3.168896922437274E-11 8.085518495400715E-10 -5.693660338819891E-14
node 1.055875901177138E-14 -2.943535783778429E-14 3.168896922437274E-11 1.045063968096139E-9 -1.029299070709559E-9 -4.876957245319999E-11
peri 1.492544031469968E-13 -3.513022466886836E-13 8.085518495400715E-10 -1.029299070709559E-9 1.182249763386478E-9 4.835273852772329E-11
i 9.11902474357855E-16 -1.854990907142398E-15 -5.693660338819891E-14 -4.876957245319999E-11 4.835273852772329E-11 2.106229859650387E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.06   n/a E2021B10  
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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