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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 86 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4641960997647793 4.8557e-08  
a 1.55597477655587 6.2872e-09 au
q .8336973539462609 7.5515e-08 au
i 6.299821093422442 5.046e-06 deg
node 61.769493766713 3.9498e-05 deg
peri 147.6162988012354 4.2081e-05 deg
M 106.9752409081901 2.9578e-05 deg
tp 2458389.839540072955
(2018-Sep-28.33954007)
5.7038e-05 TDB
period 708.928205535175
1.94
4.2968e-06
1.176e-08
d
yr
n .5078088263228763 3.0778e-09 deg/d
Q 2.278252199165478 9.2057e-09 au
  Orbit Determination Parameters
   # obs. used (total)      515  
   data-arc span      7632 days (20.90 yr)  
   first obs. used      1998-12-16  
   last obs. used      2019-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60202  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-09 05:21:39  

Additional Information
 Earth MOID = .0566129 au 
 Jupiter MOID = 2.68896 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. 2019-January); 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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