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20127 (1995 YV22)
Classification: Main-belt Asteroid          SPK-ID: 2020127
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1158979404448125 3.6784e-08  
a 3.112973868380171 1.8179e-08 au
q 2.752186608376388 1.1448e-07 au
i 1.616438687595303 4.1279e-06 deg
node 149.6096048352663 0.00015084 deg
peri 350.084038462851 0.00015223 deg
M 179.4125610372098 2.0103e-05 deg
tp 2458200.702643145956
(2018-Mar-23.20264315)
0.00011096 TDB
period 2006.141857552592
5.49
1.7573e-05
4.811e-08
d
yr
n .1794489251319369 1.5719e-09 deg/d
Q 3.473761128383954 2.0286e-08 au
  Orbit Determination Parameters
   # obs. used (total)      967  
   data-arc span      8983 days (24.59 yr)  
   first obs. used      1995-12-23  
   last obs. used      2020-07-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54279  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:13:51  

Additional Information
 Earth MOID = 1.76528 au 
 Jupiter MOID = 1.54514 au 
 T_jup = 3.207 
[ 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 14.71   n/a E2021B10  
diameter diameter 7.118 km 0.232 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.47 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:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) Ap. J. Supp. Ser. 241, A6.]
geometric albedo albedo 0.038   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20127 (1995 YV22)          Discovered 1995-Dec-19 by JPL/GEODSS NEAT at Haleakala
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 YV22 = 1997 GS40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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