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66400 (1999 LT7)
Classification: Aten [NEO]          SPK-ID: 2066400
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 102 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5723971837589289 5.1482e-08  
a .8554610116192057 3.3907e-09 au
q .365797537752808 4.3545e-08 au
i 9.065591049059243 5.5235e-06 deg
node 79.85359261230103 1.9136e-05 deg
peri 341.3485939368355 1.9855e-05 deg
M 303.2223473798775 1.4912e-05 deg
tp 2459246.079933889543
(2021-Jan-31.57993389)
1.2098e-05 TDB
period 289.0006092717538
0.79
1.7182e-06
4.704e-09
d
yr
n 1.245672114350056 7.4061e-09 deg/d
Q 1.345124485485603 5.3316e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -2.501306797856899E-14 4.723E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      492  
   data-arc span      12466 days (34.13 yr)  
   first obs. used      1987-04-21  
   last obs. used      2021-06-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47907  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-16 06:20:48  

Additional Information
 Earth MOID = .0586984 au 
 Jupiter MOID = 3.9983 au 
 T_jup = 6.739 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ 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 19.2   n/a E2021-HE8  
diameter diameter 0.411 km 0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
geometric albedo albedo 0.182   0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

66400 (1999 LT7)          Discovered 1999-Jun-09 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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