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173355 (1999 YP2)
Classification: Main-belt Asteroid          SPK-ID: 2173355
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1251126910928307 6.0654e-08  
a 2.554166476517548 1.5672e-08 au
q 2.234607835141345 1.5547e-07 au
i 9.938375080066272 6.9041e-06 deg
node 100.5787489172228 2.22e-05 deg
peri 216.756500032276 3.0238e-05 deg
M 146.0870844673724 1.9368e-05 deg
tp 2458395.463536986882
(2018-Oct-03.96353699)
7.8619e-05 TDB
period 1490.981406596348
4.08
1.3723e-05
3.757e-08
d
yr
n .2414517031582692 2.2223e-09 deg/d
Q 2.873725117893752 1.7633e-08 au
  Orbit Determination Parameters
   # obs. used (total)      316  
   data-arc span      7815 days (21.40 yr)  
   first obs. used      1998-09-22  
   last obs. used      2020-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52626  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:22:16  

Additional Information
 Earth MOID = 1.22887 au 
 Jupiter MOID = 2.38688 au 
 T_jup = 3.407 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457131.5 (2015-Apr-19.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1265685137325409 6.0734e-08  
q 2.229960333742989 1.5591e-07 au
tp 2456904.225289298224
(2014-Sep-03.72528930)
7.4398e-05 TDB
node 100.6725041404571 2.2216e-05 deg
peri 216.4866436845793 2.9975e-05 deg
i 9.937084477292867 6.9044e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      316  
   data-arc span      7815 days (21.40 yr)  
   first obs. used      1998-09-22  
   last obs. used      2020-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52626  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:22:16  

Additional Information
 Jupiter MOID = 2.38688 au 
 T_jup = 3.407 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.68857532345483E-15 -9.432453946068621E-15 -2.135965283099453E-12 9.961541263792619E-15 -5.881951633886369E-13 -6.904818207181724E-15
q -9.432453946068621E-15 2.430729240442874E-14 5.549316806791881E-12 -2.527591362807566E-14 1.531922185355272E-12 1.851173958164712E-14
tp -2.135965283099453E-12 5.549316806791881E-12 5.534994181278494E-9 -1.513855180317913E-12 1.506314405428069E-9 8.352131938942626E-12
node 9.961541263792619E-15 -2.527591362807566E-14 -1.513855180317913E-12 4.935432083792798E-10 -4.86011827779884E-10 4.786457430512565E-11
peri -5.881951633886369E-13 1.531922185355272E-12 1.506314405428069E-9 -4.86011827779884E-10 8.984873612429673E-10 -4.494513256637878E-11
i -6.904818207181724E-15 1.851173958164712E-14 8.352131938942626E-12 4.786457430512565E-11 -4.494513256637878E-11 4.767128157444113E-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 16.0   n/a MPO449898  

173355 (1999 YP2)          Discovered 1999-Dec-16 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

Alternate Designations
 1999 YP2 = 2005 GS47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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