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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0839838510107179 1.5774e-08  
a 3.007117432875916 1.3109e-08 au
q 2.754568130421533 5.1364e-08 au
i 9.49877670060738 3.3978e-07 deg
node 213.8439671451207 1.4922e-06 deg
peri 204.2256271435108 1.2232e-05 deg
M 207.7550608565342 1.4185e-05 deg
tp 2460005.997827723757
(2023-Mar-02.49782772)
7.6882e-05 TDB
period 1904.688718140541
5.21
1.2454e-05
3.41e-08
d
yr
n .189007262221541 1.2359e-09 deg/d
Q 3.259666735330299 1.421e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3098  
   data-arc span      43224 days (118.34 yr)  
   first obs. used      1902-10-24  
   last obs. used      2021-02-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43399  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:17:10  

Additional Information
 Earth MOID = 1.76811 au 
 Jupiter MOID = 2.1082 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 10.66   n/a E2021B10 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. 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:
[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.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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