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JPL Small-Body Database Browser
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2732 Witt (1926 FG)
Classification: Main-belt Asteroid          SPK-ID: 2002732
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02311436428540457 3.8276e-08  
a 2.761508474679044 1.3412e-08 au
q 2.697677961818081 1.0667e-07 au
i 6.493175642535737 4.2779e-06 deg
node 144.9659396123613 3.8132e-05 deg
peri 279.1807989273653 0.00010528 deg
M 211.8223151974298 9.9617e-05 deg
tp 2459290.419311616509
(2021-Mar-16.91931162)
0.00046483 TDB
period 1676.169745214126
4.59
1.2211e-05
3.343e-08
d
yr
n .2147753835957772 1.5647e-09 deg/d
Q 2.825338987540007 1.3722e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2312  
   data-arc span      34193 days (93.62 yr)  
   first obs. used      1926-03-18  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47696  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:19:19  

Additional Information
 Earth MOID = 1.7197 au 
 Jupiter MOID = 2.23302 au 
 T_jup = 3.332 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456096.5 (2012-Jun-18.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02497821225253396 3.8421e-08  
q 2.690810472436417 1.0773e-07 au
tp 2455920.605093870833
(2011-Dec-25.10509387)
0.00042471 TDB
node 145.1079559263866 3.8145e-05 deg
peri 274.9469321331831 9.8365e-05 deg
i 6.492976083244824 4.2785e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2312  
   data-arc span      34193 days (93.62 yr)  
   first obs. used      1926-03-18  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47696  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:19:19  

Additional Information
 Jupiter MOID = 2.23302 au 
 T_jup = 3.332 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.476173690622423E-15 -4.109688940440271E-15 -9.627784128886129E-13 1.023149964459011E-15 -2.090509933988004E-13 1.777779411455225E-15
q -4.109688940440271E-15 1.160655697870439E-14 3.760773242610967E-12 -3.789263589175563E-15 8.143673872316982E-13 -4.572081387564106E-15
tp -9.627784128886129E-13 3.760773242610967E-12 1.803796010155806E-7 -2.253103578799884E-11 3.853086968038788E-8 3.488570100503259E-12
node 1.023149964459011E-15 -3.789263589175563E-15 -2.253103578799884E-11 1.455057523242527E-9 -1.450062027431814E-9 6.641181204080203E-12
peri -2.090509933988004E-13 8.143673872316982E-13 3.853086968038788E-8 -1.450062027431814E-9 9.675726372892387E-9 -5.825132242372666E-12
i 1.777779411455225E-15 -4.572081387564106E-15 3.488570100503259E-12 6.641181204080203E-12 -5.825132242372666E-12 1.830572009276536E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.8   n/a MPO435723  
diameter diameter 11.001 km 0.291 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 14.54 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.305   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B A   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)

2732 Witt (1926 FG)          Discovered 1926-Mar-19 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1926 FG = 1935 DF = 1965 UP1 = 1969 RD = 1978 PQ1 = 1979 YL6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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