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1309 Hyperborea (1931 TO)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001309
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 56 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1496995198442476 2.8906e-08  
a 3.204752709215782 1.1908e-08 au
q 2.725002767426628 9.1911e-08 au
i 10.28008647643032 3.6731e-06 deg
node 206.0710577908633 1.7369e-05 deg
peri 244.6763189622867 2.1316e-05 deg
M 104.2787812319213 1.3742e-05 deg
tp 2458393.507034817532
(2018-Oct-02.00703482)
7.8197e-05 TDB
period 2095.512288158551
5.74
1.1679e-05
3.198e-08
d
yr
n .1717956998077797 9.5751e-10 deg/d
Q 3.684502651004936 1.369e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3170  
   data-arc span      36862 days (100.92 yr)  
   first obs. used      1919-09-01  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42753  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:31:48  

Additional Information
 Earth MOID = 1.76083 au 
 Jupiter MOID = 1.70643 au 
 T_jup = 3.151 
[ 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 10.4   n/a MPO473781  
diameter diameter 57.570 km 0.349 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 13.88 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Apostolovska, G.; Ivanova, V.; Borisov, G. (2004) Minor Planet Bull. 31, 44-45.]
[Oliver, R.L.; Shipley, H.; Ditteon, R. (2008) Minor Planet Bull. 35, 149-150.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.043   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1309 Hyperborea (1931 TO)          Discovered 1931-Oct-11 by Neujmin, G. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1931 TO = 1934 GT = 1971 SG1 = 1973 AW4 = A919 RB = A919 SH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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