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180002 (2002 YD4)
Classification: Main-belt Asteroid          SPK-ID: 2180002
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2809590748987352 3.6032e-08  
a 2.728768545490594 8.4888e-09 au
q 1.962096259336789 9.8574e-08 au
i 1.182649154129095 3.8733e-06 deg
node 29.9477832381996 0.00020351 deg
peri 61.63868174114614 0.0002038 deg
M 3.650196510159843 8.2837e-06 deg
tp 2459183.805930310864
(2020-Nov-30.30593031)
3.7869e-05 TDB
period 1646.449738078795
4.51
7.6828e-06
2.103e-08
d
yr
n .2186522865982388 1.0203e-09 deg/d
Q 3.495440831644398 1.0874e-08 au
  Orbit Determination Parameters
   # obs. used (total)      607  
   data-arc span      9907 days (27.12 yr)  
   first obs. used      1994-01-07  
   last obs. used      2021-02-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51223  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:24:44  

Additional Information
 Earth MOID = .978793 au 
 Jupiter MOID = 1.72583 au 
 T_jup = 3.297 
[ 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 16.62   n/a E2021B55  
rotation period rot_per 5.506 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.]

180002 (2002 YD4)          Discovered 2002-Dec-28 by LONEOS at Anderson Mesa
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

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