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30670 (1283 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2030670
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1656300485694047 3.4113e-08  
a 3.192248288850503 1.4578e-08 au
q 2.663516049722595 1.1293e-07 au
i .9446878897155931 4.1455e-06 deg
node 190.7613854765608 0.00021985 deg
peri 296.5375356271346 0.00022033 deg
M 345.1026925276418 1.2458e-05 deg
tp 2459286.708224727875
(2021-Mar-13.20822473)
7.2104e-05 TDB
period 2083.259740702803
5.70
1.4271e-05
3.907e-08
d
yr
n .1728061042827772 1.1838e-09 deg/d
Q 3.720980527978411 1.6993e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1519  
   data-arc span      17349 days (47.50 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50291  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:30:57  

Additional Information
 Earth MOID = 1.67878 au 
 Jupiter MOID = 1.34761 au 
 T_jup = 3.175 
[ 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 14.13   n/a MPCxxxxx  
diameter diameter 7.703 km 0.213 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 10.4 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Polishook, D.; Ofek, O.E.; Waszczak, A.; Kulkarni, S.R. (2012) ACM 2012, #6347. Supplemental material.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.052   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30670 (1283 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
 1283 T-2 = 1994 LR7 = 1999 EL3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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