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22894 (1999 TW)
Classification: Main-belt Asteroid          SPK-ID: 2022894
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2194596237661832 3.6113e-08  
a 2.184281332582199 5.4339e-09 au
q 1.704919773134212 7.835e-08 au
i 3.371211389623158 3.1642e-06 deg
node 214.3068498081348 6.1352e-05 deg
peri 102.1300537835876 6.1686e-05 deg
M 245.5343119253288 7.8071e-06 deg
tp 2459575.416117211534
(2021-Dec-26.91611721)
2.6314e-05 TDB
period 1179.128911609784
3.23
4.4e-06
1.205e-08
d
yr
n .3053101289056823 1.1393e-09 deg/d
Q 2.663642892030186 6.6264e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1583  
   data-arc span      12583 days (34.45 yr)  
   first obs. used      1986-10-09  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50284  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 03:22:04  

Additional Information
 Earth MOID = .693594 au 
 Jupiter MOID = 2.64144 au 
 T_jup = 3.644 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.71   n/a E2021B10  
diameter diameter 3.163 km 0.402 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.43945 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.233   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22894 (1999 TW)          Discovered 1999-Oct-01 by Korlevic, K. at Visnjan
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TW = 1986 TZ16 = 1998 FS24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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