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74421 (1999 AW24)
Classification: Main-belt Asteroid          SPK-ID: 2074421
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .121204479470621 5.4853e-08  
a 3.163765965953502 3.4389e-08 au
q 2.780303358883241 1.8124e-07 au
i 1.035069066310328 5.4246e-06 deg
node 145.2761415686081 0.00031954 deg
peri 26.33475404872008 0.0003203 deg
M 267.8488090351516 2.613e-05 deg
tp 2459526.642523315851
(2021-Nov-08.14252332)
0.00015411 TDB
period 2055.440699252151
5.63
3.3513e-05
9.175e-08
d
yr
n .1751449215396883 2.8556e-09 deg/d
Q 3.547228573023763 3.8557e-08 au
  Orbit Determination Parameters
   # obs. used (total)      554  
   data-arc span      7619 days (20.86 yr)  
   first obs. used      1999-01-15  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56244  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:25:40  

Additional Information
 Earth MOID = 1.78599 au 
 Jupiter MOID = 1.41899 au 
 T_jup = 3.192 
[ 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 14.7   n/a MPO359267  
diameter diameter 6.692 km 0.230 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.66 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Polishook, D.; Ofek, E.O.; Waszczak, A.; Kulkarni, S.R.; et al. (2012). Mon. Not. Royal Ast. Soc. 421, 2094-2108.]
geometric albedo albedo 0.039   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74421 (1999 AW24)          Discovered 1999-Jan-15 by ODAS at Caussols
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 AW24 = 1999 CR47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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