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3224 Irkutsk (1977 RL6)
Classification: Main-belt Asteroid          SPK-ID: 2003224
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1673937512705383 3.2473e-08  
a 2.782457475947807 1.1726e-08 au
q 2.31669148129815 9.1346e-08 au
i 4.318052848268293 3.8572e-06 deg
node 227.842409273578 4.7955e-05 deg
peri 3.940305665747069 4.9282e-05 deg
M 196.174842920421 1.3228e-05 deg
tp 2459771.970498092880
(2022-Jul-11.47049809)
6.4605e-05 TDB
period 1695.279188278319
4.64
1.0716e-05
2.934e-08
d
yr
n .2123544030323445 1.3423e-09 deg/d
Q 3.248223470597464 1.3688e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2987  
   data-arc span      24312 days (66.56 yr)  
   first obs. used      1953-07-14  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44542  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:41:42  

Additional Information
 Earth MOID = 1.30604 au 
 Jupiter MOID = 1.74794 au 
 T_jup = 3.308 
[ 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 11.5   n/a MPO324336  
diameter diameter 24.900 km 0.335 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 33.140 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.045   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3224 Irkutsk (1977 RL6)          Discovered 1977-Sep-11 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1977 RL6 = 1952 DE2 = 1953 NF = 1953 PH = 1957 HN = 1966 DP = 1971 KR = 1978 YX1 = 1982 TS = 1984 AL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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