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91821 (1999 TN277)
Classification: Main-belt Asteroid          SPK-ID: 2091821
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09446948532663636 5.1523e-08  
a 3.088934123650901 2.9824e-08 au
q 2.797124106781716 1.7393e-07 au
i 10.57115547434049 4.4627e-06 deg
node 102.7606896136249 2.7596e-05 deg
peri 301.4217358573858 4.0743e-05 deg
M 267.0330463392636 3.3382e-05 deg
tp 2459512.579624738872
(2021-Oct-25.07962474)
0.00018833 TDB
period 1982.948323538018
5.43
2.8718e-05
7.863e-08
d
yr
n .1815478475796486 2.6293e-09 deg/d
Q 3.380744140520086 3.2641e-08 au
  Orbit Determination Parameters
   # obs. used (total)      674  
   data-arc span      7602 days (20.81 yr)  
   first obs. used      1999-10-06  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55396  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:19:57  

Additional Information
 Earth MOID = 1.82518 au 
 Jupiter MOID = 1.97229 au 
 T_jup = 3.193 
[ 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 14.5   n/a MPO436413  
diameter diameter 4.319 km 0.657 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.180   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91821 (1999 TN277)          Discovered 1999-Oct-06 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TN277 = 2000 YV110 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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