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30655 (2289 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2030655
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1038823445413502 3.955e-08  
a 2.773339823367161 1.2283e-08 au
q 2.485238780305886 1.1229e-07 au
i 9.2861264243703 4.5421e-06 deg
node 20.36084317612442 2.338e-05 deg
peri 108.4439242076021 3.1738e-05 deg
M 321.544395920555 2.0714e-05 deg
tp 2459380.702244407855
(2021-Jun-15.20224441)
9.7201e-05 TDB
period 1686.953294318504
4.62
1.1207e-05
3.068e-08
d
yr
n .2134024701291052 1.4177e-09 deg/d
Q 3.061440866428436 1.3559e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1850  
   data-arc span      18249 days (49.96 yr)  
   first obs. used      1971-03-24  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48017  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:38:57  

Additional Information
 Earth MOID = 1.51821 au 
 Jupiter MOID = 2.00429 au 
 T_jup = 3.309 
[ 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 13.79   n/a E2021B10  
diameter diameter 5.473 km 0.248 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.235   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30655 (2289 T-1)          Discovered 1971-Mar-25 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2289 T-1 = 1976 JM8 = 3348 T-2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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