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43157 (1999 XT120)
Classification: Main-belt Asteroid          SPK-ID: 2043157
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01537165173709848 5.5623e-08  
a 2.454474592276945 1.0517e-08 au
q 2.416745263646907 1.4018e-07 au
i 12.58659828598514 3.5608e-06 deg
node 260.0345530252177 2.0399e-05 deg
peri 277.0067331823563 0.00012155 deg
M 55.90207444490392 0.00011891 deg
tp 2458982.396988836897
(2020-May-12.89698884)
0.000464 TDB
period 1404.546875914273
3.85
9.0275e-06
2.472e-08
d
yr
n .2563104202311955 1.6474e-09 deg/d
Q 2.492203920906983 1.0679e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1613  
   data-arc span      8012 days (21.94 yr)  
   first obs. used      1998-06-24  
   last obs. used      2020-05-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49002  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:16:43  

Additional Information
 Earth MOID = 1.42787 au 
 Jupiter MOID = 2.56012 au 
 T_jup = 3.460 
[ 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 14.16   n/a E2021B10  
diameter diameter 3.735 km 0.155 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.869 h n/a LCDB (Rev. 2020-October); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.349   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43157 (1999 XT120)          Discovered 1999-Dec-05 by CSS at Catalina
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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