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181915 (1999 TY51)
Classification: Main-belt Asteroid          SPK-ID: 2181915
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05436065026861979 3.5368e-08  
a 3.077671277982686 2.5379e-08 au
q 2.910367065998493 1.0341e-07 au
i 8.40078880294538 4.6719e-06 deg
node 220.0763367687349 2.7985e-05 deg
peri 54.09161345023071 7.927e-05 deg
M 75.76442759924586 6.9088e-05 deg
tp 2458785.455541314339
(2019-Oct-28.95554131)
0.00038151 TDB
period 1972.112901283573
5.40
2.4394e-05
6.679e-08
d
yr
n .1825453298164064 2.258e-09 deg/d
Q 3.244975489966879 2.6759e-08 au
  Orbit Determination Parameters
   # obs. used (total)      555  
   data-arc span      7724 days (21.15 yr)  
   first obs. used      1999-10-04  
   last obs. used      2020-11-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5217  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:35  

Additional Information
 Earth MOID = 1.90263 au 
 Jupiter MOID = 1.80628 au 
 T_jup = 3.210 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457686.5 (2016-Oct-25.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05439654229950421 3.3878e-08  
q 2.910936496481563 1.0021e-07 au
tp 2456830.140486192403
(2014-Jun-21.64048619)
0.00040317 TDB
node 220.2045316951419 2.7912e-05 deg
peri 57.39031628743419 8.019e-05 deg
i 8.41128462330178 4.6776e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      555  
   data-arc span      7724 days (21.15 yr)  
   first obs. used      1999-10-04  
   last obs. used      2020-11-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5217  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:35  

Additional Information
 Jupiter MOID = 1.80628 au 
 T_jup = 3.210 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.147687972999631E-15 -3.298463141809281E-15 -3.935477417010371E-12 4.822305041290114E-15 -7.647981830469389E-13 -5.742948852431193E-16
q -3.298463141809281E-15 1.004302114747013E-14 5.447068338631781E-12 -1.05874238072622E-14 1.137030102549196E-12 3.792050475630297E-15
tp -3.935477417010371E-12 5.447068338631781E-12 1.625473673962614E-7 -9.177929008686925E-11 3.032305220828456E-8 -4.301282519714423E-11
node 4.822305041290114E-15 -1.05874238072622E-14 -9.177929008686925E-11 7.790804505986895E-10 -7.874240439830773E-10 -4.388430407529053E-11
peri -7.647981830469389E-13 1.137030102549196E-12 3.032305220828456E-8 -7.874240439830773E-10 6.430378122769185E-9 3.548862122175489E-11
i -5.742948852431193E-16 3.792050475630297E-15 -4.301282519714423E-11 -4.388430407529053E-11 3.548862122175489E-11 2.188029265920488E-11

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 15.22   n/a MPCxxxxx  
diameter diameter 4.184 km 1.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.092   0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

181915 (1999 TY51)          Discovered 1999-Oct-04 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 1999 TY51 = 2004 RU177 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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