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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 ]

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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 
[ show covariance matrix ]

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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