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137805 (1999 YK5)
Classification: Aten [NEO]          SPK-ID: 2137805
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 256 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5582885924289044 2.7608e-08  
a .8293691529760343 1.1315e-09 au
q .3663418159570914 2.2957e-08 au
i 16.7472306526953 8.9282e-07 deg
node 349.5476349538558 6.9064e-06 deg
peri 292.8617453328685 6.9529e-06 deg
M 319.4830187178687 9.8595e-06 deg
tp 2459427.549515270058
(2021-Aug-01.04951527)
7.6033e-06 TDB
period 275.8800173040146
0.76
5.6457e-07
1.546e-09
d
yr
n 1.304915098665109 2.6704e-09 deg/d
Q 1.292396489994977 1.7632e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1303  
   data-arc span      7813 days (21.39 yr)  
   first obs. used      1999-12-28  
   last obs. used      2021-05-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44496  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-03 06:40:59  

Additional Information
 Earth MOID = .113854 au 
 Jupiter MOID = 3.93477 au 
 T_jup = 6.908 
[ 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 16.68   n/a MPCxxxxx  
diameter diameter 2.243 km 0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 3.930 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2016) Minor Planet Bull. 43, 240-250.]
geometric albedo albedo 0.027   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
SMASSII spectral type spec_B X   n/a Binzel et al. (2001) Icarus 151, 139-149  

137805 (1999 YK5)          Discovered 1999-Dec-28 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

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