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20429 (1998 YN1)
Classification: Apollo [NEO]          SPK-ID: 2020429
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 87 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4640091326922573 4.854e-08  
a 1.556119163222335 6.3129e-09 au
q .834065659929738 7.55e-08 au
i 6.2991487592961 5.0435e-06 deg
node 61.77123063768068 3.9416e-05 deg
peri 147.6140482169267 4.2005e-05 deg
M 310.0765693413912 3.0745e-05 deg
tp 2459098.825151510003
(2020-Sep-06.32515151)
6.1123e-05 TDB
period 709.026885304749
1.94
4.3146e-06
1.181e-08
d
yr
n .5077381513470639 3.0897e-09 deg/d
Q 2.278172666514931 9.2422e-09 au
  Orbit Determination Parameters
   # obs. used (total)      519  
   data-arc span      7711 days (21.11 yr)  
   first obs. used      1998-12-16  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59451  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-27 05:41:01  

Additional Information
 Earth MOID = .0563153 au 
 Jupiter MOID = 2.68818 au 
 T_jup = 4.307 
[ 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 17.6   n/a MPO435889  
rotation period rot_per 2.7180 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:
[Pravec, P.; Wolf, M.; Sarounova, L. (2001) http://www.asu.cas.cz/~ppravec/neo.htm]

20429 (1998 YN1)          Discovered 1998-Dec-16 by LINEAR at Socorro
Reference: 20010109/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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