Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
326 Tamara (A892 FD)
Classification: Main-belt Asteroid          SPK-ID: 2000326
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 98 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1903462884360755 3.466e-08  
a 2.317135894508429 5.6623e-09 au
q 1.876077677186744 8.0418e-08 au
i 23.72625746138533 5.0621e-06 deg
node 32.18531950971899 8.6855e-06 deg
peri 238.498298102311 1.6283e-05 deg
M 57.38668333504408 1.5232e-05 deg
tp 2458795.131274072895
(2019-Nov-07.63127407)
5.4229e-05 TDB
period 1288.325741045393
3.53
4.7224e-06
1.293e-08
d
yr
n .2794324358588716 1.0243e-09 deg/d
Q 2.758194111830114 6.7401e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2450  
   data-arc span      46423 days (127.10 yr)  
   first obs. used      1893-09-20  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43447  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:30:50  

Additional Information
 Earth MOID = .943809 au 
 Jupiter MOID = 2.44043 au 
 T_jup = 3.445 
[ 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 9.4   n/a MPO492752 IRAS observations used: 11
diameter diameter 93.00 km 1.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
rotation period rot_per 14.445 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Gil-Hutton, R. (1993) Rev. Mexicana Astron. Astrof. 25, 75-77.]
[Pray, D.P. (2006) Minor Planet Bull. 33, 4-5.]
[Higgins, D. (2011) Minor Planet Bull. 38, 41-46.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0368   0.001 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
B-V BV 0.708   0.048 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=8.69, mean=14.40, max.=22.86) deg.
U-B UB 0.318   0.019 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=8.69, mean=14.40, max.=22.86) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

326 Tamara (A892 FD)          Discovered 1892-Mar-19 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A892 FD = A899 OD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-05 12:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin