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70498 (1999 TN91)
Classification: Main-belt Asteroid          SPK-ID: 2070498
[ 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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1046079508007725 3.2943e-08  
a 2.364154682003705 9.3724e-09 au
q 2.116845305343245 7.7504e-08 au
i 5.885760516787323 4.3675e-06 deg
node 152.9519584246684 3.624e-05 deg
peri 303.9335837259858 4.2505e-05 deg
M 226.286999933107 2.2249e-05 deg
tp 2459693.654943984987
(2022-Apr-24.15494398)		 8.2982e-05 TDB
period 1327.737615233964
3.64		 7.8955e-06
2.162e-08		 d
yr
n .2711379084764149 1.6123e-09 deg/d
Q 2.611464058664164 1.0353e-08 au
   Orbit Determination Parameters
   # obs. used (total)      878  
   data-arc span      8734 days (23.91 yr)  
   first obs. used      1995-07-03  
   last obs. used      2019-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5748  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:00:24  

Additional Information
 Earth MOID = 1.13996 au 
 Jupiter MOID = 2.51542 au 
 T_jup = 3.535 
[ 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 15.7   n/a MPO474583  
diameter diameter 2.072 km 0.623 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.180   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70498 (1999 TN91)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TN91 = 1999 TD323 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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