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164121 (2003 YT1)
Classification: Apollo [NEO, PHA]          SPK-ID: 2164121
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 149 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2920114422110329 1.4165e-08  
a 1.109606259744558 6.9713e-10 au
q .7855885355501595 1.6153e-08 au
i 44.06062776791092 5.8496e-06 deg
node 38.32952983503532 7.0529e-07 deg
peri 91.04463201593742 2.9164e-06 deg
M 325.9973299774697 2.9394e-06 deg
tp 2459040.823878188380
(2020-Jul-10.32387819)
3.516e-06 TDB
period 426.9251837634498
1.17
4.0234e-07
1.102e-09
d
yr
n .8432390819077762 7.9468e-10 deg/d
Q 1.433623983938956 9.0071e-10 au
  Orbit Determination Parameters
   # obs. used (total)      1091  
   # delay obs. used      7  
   # Doppler obs. used      1  
   data-arc span      13367 days (36.60 yr)  
   first obs. used      1982-11-19  
   last obs. used      2019-06-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .32158  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-07 06:10:38  

Additional Information
 Earth MOID = .0023103 au 
 Jupiter MOID = 3.84529 au 
 T_jup = 5.324 
[ 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 16.2   n/a MPO198816  
diameter diameter 1.717 km 0.550 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2012ApJ...760L..12M)  
rotation period rot_per 2.343 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Larson, S.M.; Grauer, A.D.; Beshore, E.; Christensen, E.; et al. (2004) Bull. Amer. Astron. Soc. 36, 1139.]
[Nolan, M.C.; Howell, E.S.; Hine, A.A.; Galad, A.; et al. (2003) IAUC 8336.]
[Pravec, P.; et al. (2006) Icarus 181, 63-93.]
geometric albedo albedo 0.198   0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2012ApJ...760L..12M)  

164121 (2003 YT1)          Discovered 2003-Dec-18 by CSS at Catalina
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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