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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1671694814725894 3.1545e-08  
a 2.782957357325943 1.1526e-08 au
q 2.317731818941438 8.9238e-08 au
i 4.317321135017573 3.688e-06 deg
node 227.8367931520366 4.5928e-05 deg
peri 3.934773831046775 4.7264e-05 deg
M 238.6399165960641 1.3305e-05 deg
tp 2459772.151858832598
(2022-Jul-11.65185883)
6.4477e-05 TDB
period 1695.736055938316
4.64
1.0535e-05
2.884e-08
d
yr
n .2122971902020436 1.3189e-09 deg/d
Q 3.248182895710449 1.3453e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3274  
   data-arc span      24664 days (67.53 yr)  
   first obs. used      1953-07-14  
   last obs. used      2021-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43309  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:08:51  

Additional Information
 Earth MOID = 1.30579 au 
 Jupiter MOID = 1.74682 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 11.65   n/a E2021B10  
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. 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:
[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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