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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09446948957977601 5.2371e-08  
a 3.088934129375551 3.1279e-08 au
q 2.797124098827893 1.7514e-07 au
i 10.57115625744147 4.4958e-06 deg
node 102.7606749203148 2.9938e-05 deg
peri 301.4217510073531 4.2382e-05 deg
M 267.0330441921329 3.3526e-05 deg
tp 2459512.579637989213
(2021-Oct-25.07963799)
0.00018932 TDB
period 1982.948329050447
5.43
3.012e-05
8.246e-08
d
yr
n .181547847074961 2.7576e-09 deg/d
Q 3.380744159923209 3.4234e-08 au
  Orbit Determination Parameters
   # obs. used (total)      639  
   data-arc span      7235 days (19.81 yr)  
   first obs. used      1999-10-06  
   last obs. used      2019-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55944  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:37:47  

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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