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 ]  
1089 Tama (1927 WB)
Classification: Main-belt Asteroid          SPK-ID: 2001089
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 70 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1276035902315716 3.4539e-08  
a 2.213924634121149 4.9914e-09 au
q 1.931419902305172 7.7992e-08 au
i 3.726570680662036 3.6155e-06 deg
node 71.48070121584621 5.1562e-05 deg
peri 354.7441426245967 5.3421e-05 deg
M 21.51024572550731 1.3676e-05 deg
tp 2458928.607175439892
(2020-Mar-20.10717544)
4.5665e-05 TDB
period 1203.213444044864
3.29
4.069e-06
1.114e-08
d
yr
n .2991987845396588 1.0118e-09 deg/d
Q 2.496429365937126 5.6283e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2865  
   data-arc span      45750 days (125.26 yr)  
   first obs. used      1894-11-01  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41055  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:45:34  

Additional Information
 Earth MOID = .945186 au 
 Jupiter MOID = 2.7621 au 
 T_jup = 3.641 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456246.5 (2012-Nov-15.0) TDB
Reference: JPL 70 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1271567644483059 3.4546e-08  
q 1.932190468834551 7.7946e-08 au
tp 2456521.255215187140
(2013-Aug-16.75521519)
4.5062e-05 TDB
node 71.50940629404514 5.1553e-05 deg
peri 354.5362706126455 5.3426e-05 deg
i 3.727560635331531 3.6158e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2865  
   data-arc span      45750 days (125.26 yr)  
   first obs. used      1894-11-01  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41055  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:45:34  

Additional Information
 Jupiter MOID = 2.7621 au 
 T_jup = 3.641 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.193433630725141E-15 -2.68895920986063E-15 -1.971323884571674E-13 8.457254498615645E-17 -3.171033357315582E-14 -8.404234295834789E-16
q -2.68895920986063E-15 6.075613358821325E-15 4.371550222512154E-13 -2.292646920262105E-16 6.684944977869782E-14 1.915898990354763E-15
tp -1.971323884571674E-13 4.371550222512154E-13 2.030548160397277E-9 3.654806105637777E-12 6.393772347641434E-10 6.696815452044309E-13
node 8.457254498615645E-17 -2.292646920262105E-16 3.654806105637777E-12 2.657713121091062E-9 -2.650402254037809E-9 -2.763644171954362E-11
peri -3.171033357315582E-14 6.684944977869782E-14 6.393772347641434E-10 -2.650402254037809E-9 2.854378346617329E-9 2.776222467441389E-11
i -8.404234295834789E-16 1.915898990354763E-15 6.696815452044309E-13 -2.763644171954362E-11 2.776222467441389E-11 1.307387440062164E-11

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 11.7   n/a MPO435705  
diameter diameter 13.082 km 0.373 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 16.44 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R.; et al. (2004) IAUC 8265. (1089)]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R.; et al. (2006) Astron. Astrophys. 446, 1177-1184.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Marchis, F.; Enriquez, J.E.; Emery, J.P.; Mueller, M.; et al. (2012) Icarus 221, 1130-1161.]
[Polishook, D. (2012) Minor Planet Bull. 39, 242-244.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.216   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1089 Tama (1927 WB)          Discovered 1927-Nov-17 by Oikawa, O. at Tokyo
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1927 WB = 1930 ST = 1952 HE4 = A894 VA = A904 VD = A919 HA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-26 04:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin