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173340 (1999 XY23)
Classification: Main-belt Asteroid          SPK-ID: 2173340
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07371050158558878 2.3402e-07  
a 2.512875653276601 9.1596e-09 au
q 2.327650328451369 5.8707e-07 au
i 8.000951907140115 5.8869e-06 deg
node 235.1592293941305 2.6453e-05 deg
peri 180.849925448762 0.00012231 deg
M 143.7266543468628 0.00010599 deg
tp 2458815.615564156887
(2019-Nov-28.11556416)
0.00042846 TDB
period 1454.972968332268
3.98
7.9553e-06
2.178e-08
d
yr
n .247427277231578 1.3528e-09 deg/d
Q 2.698100978101833 9.8348e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1218  
   data-arc span      10807 days (29.59 yr)  
   first obs. used      1991-11-07  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50858  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:25:48  

Additional Information
 Earth MOID = 1.33882 au 
 Jupiter MOID = 2.582 au 
 T_jup = 3.443 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457323.5 (2015-Oct-28.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07239279577650973 2.3564e-07  
q 2.331275923810508 5.9077e-07 au
tp 2457356.439440869537
(2015-Nov-29.93944087)
0.0004339 TDB
node 235.2175181716645 2.6493e-05 deg
peri 179.9733192213988 0.00012327 deg
i 7.993104171179279 5.8834e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1218  
   data-arc span      10807 days (29.59 yr)  
   first obs. used      1991-11-07  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50858  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 02:25:48  

Additional Information
 Jupiter MOID = 2.582 au 
 T_jup = 3.443 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.552706588210091E-14 -1.391969778514892E-13 -9.920831758752228E-11 -2.334095673220138E-13 -2.761015739214102E-11 1.239301799538899E-13
q -1.391969778514892E-13 3.490145402904413E-13 2.489502192309079E-10 5.85196662521258E-13 6.927826133325278E-11 -3.108433336979055E-13
tp -9.920831758752228E-11 2.489502192309079E-10 1.882710471888611E-7 4.150948477074385E-10 5.224722940552086E-8 -2.28638027158552E-10
node -2.334095673220138E-13 5.85196662521258E-13 4.150948477074385E-10 7.019043793853394E-10 -5.779286637655312E-10 -7.584455166473745E-11
peri -2.761015739214102E-11 6.927826133325278E-11 5.224722940552086E-8 -5.779286637655312E-10 1.519510818942217E-8 1.101533253330764E-11
i 1.239301799538899E-13 -3.108433336979055E-13 -2.28638027158552E-10 -7.584455166473745E-11 1.101533253330764E-11 3.461433196498971E-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 15.23   n/a MPCxxxxx  

173340 (1999 XY23)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

Alternate Designations
 1999 XY23 = 1995 WL16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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