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74808 (1999 TW1)
Classification: Main-belt Asteroid          SPK-ID: 2074808
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1097053948210324 3.0491e-08  
a 2.355735224251325 8.4067e-09 au
q 2.09729836138102 7.3566e-08 au
i 4.579561144923206 4.3049e-06 deg
node 183.3864826041907 4.1834e-05 deg
peri 117.8933669317549 4.6351e-05 deg
M 18.88564257217622 1.9772e-05 deg
tp 2459131.218480238333
(2020-Oct-08.71848024)
7.249e-05 TDB
period 1320.651231160414
3.62
7.0693e-06
1.935e-08
d
yr
n .2725927871840013 1.4592e-09 deg/d
Q 2.61417208712163 9.329e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1428  
   data-arc span      8313 days (22.76 yr)  
   first obs. used      1998-03-03  
   last obs. used      2020-12-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47908  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:15:46  

Additional Information
 Earth MOID = 1.08477 au 
 Jupiter MOID = 2.5673 au 
 T_jup = 3.542 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456773.5 (2014-Apr-26.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1098374791733228 3.0564e-08  
q 2.096140420243985 7.3667e-08 au
tp 2456488.988683379774
(2013-Jul-15.48868338)
7.1939e-05 TDB
node 183.4848290852723 4.1913e-05 deg
peri 117.462517947394 4.6374e-05 deg
i 4.574666672073781 4.3022e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1428  
   data-arc span      8313 days (22.76 yr)  
   first obs. used      1998-03-03  
   last obs. used      2020-12-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47908  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:15:46  

Additional Information
 Jupiter MOID = 2.5673 au 
 T_jup = 3.542 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.341575478145222E-16 -2.240578525066818E-15 3.970127028516666E-13 -3.473187262006247E-16 1.106861085321327E-13 -5.843295322083306E-16
q -2.240578525066818E-15 5.426810650872327E-15 -9.783319634533986E-13 1.11814220149936E-15 -2.699914937501038E-13 1.589393946757779E-15
tp 3.970127028516666E-13 -9.783319634533986E-13 5.175231426812335E-9 -1.260545764272114E-12 1.435506991762648E-9 6.325829846536099E-14
node -3.473187262006247E-16 1.11814220149936E-15 -1.260545764272114E-12 1.756739984508203E-9 -1.751130509036919E-9 1.182545092989168E-11
peri 1.106861085321327E-13 -2.699914937501038E-13 1.435506991762648E-9 -1.751130509036919E-9 2.150503239097751E-9 -1.178122216534193E-11
i -5.843295322083306E-16 1.589393946757779E-15 6.325829846536099E-14 1.182545092989168E-11 -1.178122216534193E-11 1.850900495083538E-11

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 15.15   n/a E2021B10  

74808 (1999 TW1)          Discovered 1999-Oct-01 by Korlevic, K. at Visnjan
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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