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2052 Tamriko (1976 UN)
Classification: Main-belt Asteroid          SPK-ID: 2002052
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08430482894982372 3.6148e-08  
a 3.006153396333931 1.4529e-08 au
q 2.752720148459068 1.0661e-07 au
i 9.500827298061617 4.1154e-06 deg
node 213.853051758989 2.0591e-05 deg
peri 204.3535109598197 3.0164e-05 deg
M 169.7893417817486 2.3532e-05 deg
tp 2458102.610159821780
(2017-Dec-15.11015982)
0.0001222 TDB
period 1903.772869793324
5.21
1.3802e-05
3.779e-08
d
yr
n .189098187978213 1.3709e-09 deg/d
Q 3.259586644208795 1.5754e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2978  
   data-arc span      43018 days (117.78 yr)  
   first obs. used      1902-10-24  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42109  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:45:02  

Additional Information
 Earth MOID = 1.76712 au 
 Jupiter MOID = 2.10752 au 
 T_jup = 3.225 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.5   n/a MPO473792 IRAS observations used: 3
diameter diameter 26.799 km 0.156 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.462 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:
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Sheridan, E.E. (2002) Minor Planet Bull. 29, 32-33.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D (2012) Minor Planet Bull. 39, 16-21.]
[Foylan, M. (2018) Minor Planet Bull. 45, 119-120.]
geometric albedo albedo 0.158   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.825   0.024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.78 deg.
U-B UB 0.433   0.041 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.78 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

2052 Tamriko (1976 UN)          Discovered 1976-Oct-24 by West, R. M. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1976 UN = 1928 TD = 1939 YA = 1942 JE = 1949 UV = 1951 CP1 = 1952 FL = 1952 HL2 = 1954 TS = 1975 WB2 = A902 UB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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