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173358 (1999 YL12)
Classification: Main-belt Asteroid          SPK-ID: 2173358
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04500839669426328 6.0644e-08  
a 2.58627552518149 2.0668e-08 au
q 2.469871410383457 1.4904e-07 au
i 27.68163577029925 4.8996e-06 deg
node 264.5330500412228 1.3774e-05 deg
peri 1.34631549055843 7.7937e-05 deg
M 146.9043051846085 7.8426e-05 deg
tp 2458380.570027146566
(2018-Sep-19.07002715)
0.00032953 TDB
period 1519.184818625853
4.16
1.8211e-05
4.986e-08
d
yr
n .2369691926790254 2.8406e-09 deg/d
Q 2.702679639979523 2.1599e-08 au
  Orbit Determination Parameters
   # obs. used (total)      543  
   data-arc span      7673 days (21.01 yr)  
   first obs. used      1999-11-14  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46793  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:25:59  

Additional Information
 Earth MOID = 1.45412 au 
 Jupiter MOID = 2.40046 au 
 T_jup = 3.259 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457864.5 (2017-Apr-21.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04573888007076027 6.0556e-08  
q 2.467751490222841 1.4905e-07 au
tp 2458383.595982216543
(2018-Sep-22.09598222)
0.00032442 TDB
node 264.5606194736832 1.3785e-05 deg
peri 2.084075732514734 7.6848e-05 deg
i 27.66824454609671 4.8984e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      543  
   data-arc span      7673 days (21.01 yr)  
   first obs. used      1999-11-14  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46793  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:25:59  

Additional Information
 Jupiter MOID = 2.40046 au 
 T_jup = 3.259 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.667012936488538E-15 -8.962117174102078E-15 3.846940775923712E-12 1.496489677852255E-14 6.238714067110459E-13 -1.693155872898122E-15
q -8.962117174102078E-15 2.221468603522982E-14 -8.870899714431342E-12 -3.37380946001988E-14 -1.429742706367606E-12 4.112033372327911E-15
tp 3.846940775923712E-12 -8.870899714431342E-12 1.052482712540212E-7 -5.382583323400872E-11 2.453156751679709E-8 -1.904848363350301E-10
node 1.496489677852255E-14 -3.37380946001988E-14 -5.382583323400872E-11 1.900193735235284E-10 -1.818589550308756E-10 2.309909203089955E-12
peri 6.238714067110459E-13 -1.429742706367606E-12 2.453156751679709E-8 -1.818589550308756E-10 5.90560274355662E-9 -4.679184386663985E-11
i -1.693155872898122E-15 4.112033372327911E-15 -1.904848363350301E-10 2.309909203089955E-12 -4.679184386663985E-11 2.39942297118691E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO502965  
diameter diameter 5.785 km 0.173 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173358 (1999 YL12)          Discovered 1999-Dec-27 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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