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16851 (1997 YU1)
Classification: Mars-crossing Asteroid          SPK-ID: 2016851
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3658759497402427 7.5961e-08  
a 2.29435406892814 1.0009e-08 au
q 1.454905094918666 1.728e-07 au
i 20.77739602172861 9.0103e-06 deg
node 292.6893376554362 1.8648e-05 deg
peri 91.28914036397902 2.2304e-05 deg
M 274.4035950964969 1.106e-05 deg
tp 2459502.315896649238
(2021-Oct-14.81589665)
3.9758e-05 TDB
period 1269.372503625782
3.48
8.3064e-06
2.274e-08
d
yr
n .2836046936354075 1.8558e-09 deg/d
Q 3.133803042937614 1.3671e-08 au
  Orbit Determination Parameters
   # obs. used (total)      559  
   data-arc span      9414 days (25.77 yr)  
   first obs. used      1993-07-23  
   last obs. used      2019-05-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5404  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:44:13  

Additional Information
 Earth MOID = .630579 au 
 Jupiter MOID = 2.78449 au 
 T_jup = 3.423 
[ 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 15.3   n/a MPO337401  
diameter diameter 1.839 km 0.252 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 145.85 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.396   0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

16851 (1997 YU1)          Discovered 1997-Dec-21 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 YU1 = 1993 OK2 = 2000 NY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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