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1271 Isergina (1931 TN)
Classification: Main-belt Asteroid          SPK-ID: 2001271
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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1203030744593127 3.3787e-08  
a 3.138754456192782 1.2745e-08 au
q 2.761152645139922 1.0837e-07 au
i 6.683349022641783 3.247e-06 deg
node 126.8428666961825 3.325e-05 deg
peri 271.8135451558265 3.6296e-05 deg
M 335.3859529154129 1.3655e-05 deg
tp 2459139.372088395771
(2020-Oct-16.87208840)
7.6854e-05 TDB
period 2031.114657848485
5.56
1.2371e-05
3.387e-08
d
yr
n .1772425789006614 1.0796e-09 deg/d
Q 3.516356267245642 1.4278e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3264  
   data-arc span      41852 days (114.58 yr)  
   first obs. used      1906-04-17  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41103  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:59:32  

Additional Information
 Earth MOID = 1.77925 au 
 Jupiter MOID = 1.92059 au 
 T_jup = 3.189 
[ 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 10.3   n/a MPO435707  
diameter diameter 47.524 km 0.383 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 7.59932 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Aznar, A.M.; Carreno Garcerain, A.; Arce Masego, E.; Brines Rodriques, P.; et al. (2016) Minor Planet Bull. 43, 257-263.]
[Benishek, V. (2016) Minor Planet Bull. 43, 339-342.]
geometric albedo albedo 0.031   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1271 Isergina (1931 TN)          Discovered 1931-Oct-10 by Neujmin, G. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1931 TN = 1930 MK = 1932 CK1 = 2003 RV22 = 2019 GW35 = A906 HD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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