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22609 (1998 JT1)
Classification: Main-belt Asteroid          SPK-ID: 2022609
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2051469090069654 3.1818e-08  
a 2.419174348920658 9.87e-09 au
q 1.922888208890647 7.7736e-08 au
i 3.352188934900619 3.5121e-06 deg
node 106.9096544997065 6.1452e-05 deg
peri 207.36010647542 6.2314e-05 deg
M 297.5128139931708 1.3833e-05 deg
tp 2459439.054518464361
(2021-Aug-12.55451846)
5.3855e-05 TDB
period 1374.355802128523
3.76
8.4108e-06
2.303e-08
d
yr
n .2619409031070794 1.603e-09 deg/d
Q 2.915460488950669 1.1895e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1764  
   data-arc span      10477 days (28.68 yr)  
   first obs. used      1991-09-14  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4959  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:08:13  

Additional Information
 Earth MOID = .907708 au 
 Jupiter MOID = 2.37121 au 
 T_jup = 3.483 
[ 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 14.53   n/a E2021B10  
diameter diameter 3.356 km 0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 98.424 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.182   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22609 (1998 JT1)          Discovered 1998-May-01 by JPL/GEODSS NEAT at Haleakala
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 JT1 = 1991 RD36 = 1999 XF5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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