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71229 (1999 YD17)
Classification: Outer Main-belt Asteroid          SPK-ID: 2071229
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1686559705056416 3.7955e-08  
a 3.20155490691891 2.2799e-08 au
q 2.661593556965402 1.2987e-07 au
i 5.425186046023129 4.1857e-06 deg
node 136.8317054715731 4.4678e-05 deg
peri 171.7279420210569 4.6514e-05 deg
M 312.854522127982 1.2381e-05 deg
tp 2458874.516932241080
(2020-Jan-26.01693224)
7.2341e-05 TDB
period 2092.376619335058
5.73
2.235e-05
6.119e-08
d
yr
n .1720531555712018 1.8378e-09 deg/d
Q 3.741516256872418 2.6644e-08 au
  Orbit Determination Parameters
   # obs. used (total)      859  
   data-arc span      10246 days (28.05 yr)  
   first obs. used      1991-08-03  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57992  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:39:51  

Additional Information
 Earth MOID = 1.6463 au 
 Jupiter MOID = 1.53471 au 
 T_jup = 3.165 
[ 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 14.3   n/a MPO436281  
diameter diameter 5.514 km 0.419 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.121   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71229 (1999 YD17)          Discovered 1999-Dec-31 by Spacewatch at Kitt Peak
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 YD17 = 1991 PG4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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