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1932 Jansky (1971 UB1)
Classification: Main-belt Asteroid          SPK-ID: 2001932
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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1588315745265286 2.6385e-08  
a 2.371627132974362 5.6383e-09 au
q 1.994937861254207 6.3419e-08 au
i 1.890737443425355 2.94e-06 deg
node 188.9876536701348 8.6386e-05 deg
peri 303.4041717705292 8.6904e-05 deg
M 30.43524931016565 8.7308e-06 deg
tp 2458887.717321325175
(2020-Feb-08.21732133)
3.2348e-05 TDB
period 1334.037513843381
3.65
4.7573e-06
1.302e-08
d
yr
n .2698574787172475 9.6234e-10 deg/d
Q 2.748316404694517 6.5338e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2689  
   data-arc span      22776 days (62.36 yr)  
   first obs. used      1958-02-24  
   last obs. used      2020-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45015  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:14:07  

Additional Information
 Earth MOID = 1.01007 au 
 Jupiter MOID = 2.29487 au 
 T_jup = 3.526 
[ 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 13.6   n/a MPO416727  
diameter diameter 5.414 km 0.413 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 64.496 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.219   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B Sl   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)

1932 Jansky (1971 UB1)          Discovered 1971-Oct-26 by Kohoutek, L. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1971 UB1 = 1958 DD1 = 1964 XL 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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