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30668 (1227 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2030668
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1578705713791707 3.1534e-08  
a 2.293426935987341 6.3733e-09 au
q 1.931362315186639 7.2386e-08 au
i 3.369939062314652 3.7455e-06 deg
node 171.418395026797 5.4521e-05 deg
peri 246.7622888222395 5.5876e-05 deg
M 170.8408112591364 1.1825e-05 deg
tp 2458598.474461881008
(2019-Apr-24.97446188)
4.0832e-05 TDB
period 1268.603164112209
3.47
5.2881e-06
1.448e-08
d
yr
n .2837766846119561 1.1829e-09 deg/d
Q 2.655491556788043 7.3795e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1694  
   data-arc span      17046 days (46.67 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51231  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:39:03  

Additional Information
 Earth MOID = .945635 au 
 Jupiter MOID = 2.67227 au 
 T_jup = 3.578 
[ 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 15.07   n/a E2021B10  
diameter diameter 5.838 km 0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30668 (1227 T-2)          Discovered 1973-Sep-29 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
 1227 T-2 = 1999 CT60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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