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175905 (1999 YD23)
Classification: Main-belt Asteroid          SPK-ID: 2175905
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2309954023704673 1.6782e-07  
a 2.530312920728798 1.4938e-08 au
q 1.945822269481858 4.3391e-07 au
i 7.099898576687024 7.4974e-06 deg
node 90.19896502732941 6.656e-05 deg
peri 350.9474660013381 8.1419e-05 deg
M 73.02610559211008 4.1801e-05 deg
tp 2458902.280926490572
(2020-Feb-22.78092649)
0.00016851 TDB
period 1470.143664281524
4.03
1.3019e-05
3.564e-08
d
yr
n .2448740274481516 2.1685e-09 deg/d
Q 3.114803571975739 1.8389e-08 au
  Orbit Determination Parameters
   # obs. used (total)      544  
   data-arc span      7849 days (21.49 yr)  
   first obs. used      1999-11-04  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61245  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:04:37  

Additional Information
 Earth MOID = .961706 au 
 Jupiter MOID = 2.13971 au 
 T_jup = 3.403 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457554.5 (2016-Jun-15.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2288328716929469 1.6642e-07  
q 1.952142038864997 4.2875e-07 au
tp 2457431.273630191242
(2016-Feb-12.77363019)
0.00016186 TDB
node 90.28727591228269 6.6648e-05 deg
peri 350.8890260309388 8.1842e-05 deg
i 7.092761333945966 7.4864e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      544  
   data-arc span      7849 days (21.49 yr)  
   first obs. used      1999-11-04  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61245  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:04:37  

Additional Information
 Jupiter MOID = 2.13971 au 
 T_jup = 3.403 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.769402011960997E-14 -7.1341857591466E-14 -2.61384372858495E-11 2.746434842674725E-13 -7.709046430485041E-12 -1.813633346353368E-13
q -7.1341857591466E-14 1.838290864839134E-13 6.737623129105883E-11 -7.044532096705408E-13 1.987062986492035E-11 4.671839376931466E-13
tp -2.61384372858495E-11 6.737623129105883E-11 2.619953922337167E-8 -2.669145559002138E-10 7.790559836033358E-9 1.761560201635054E-10
node 2.746434842674725E-13 -7.044532096705408E-13 -2.669145559002138E-10 4.441986690215886E-9 -4.484095215494323E-9 -4.300248628448338E-10
peri -7.709046430485041E-12 1.987062986492035E-11 7.790559836033358E-9 -4.484095215494323E-9 6.698064532602254E-9 4.771156550744408E-10
i -1.813633346353368E-13 4.671839376931466E-13 1.761560201635054E-10 -4.300248628448338E-10 4.771156550744408E-10 5.604687843724073E-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 16.70   n/a E2021B55  
diameter diameter 2.692 km 0.629 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.051   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

175905 (1999 YD23)          Discovered 1999-Dec-31 by CSS at Catalina
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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