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6790 Pingouin (1991 SF1)
Classification: Main-belt Asteroid          SPK-ID: 2006790
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2057188759540178 2.2172e-08  
a 2.341685578583063 6.5465e-09 au
q 1.859956653519221 5.1888e-08 au
i 11.11367985452695 4.0965e-06 deg
node 204.0242907219522 1.3682e-05 deg
peri 93.83876191530553 1.7445e-05 deg
M 102.9345357769796 1.1026e-05 deg
tp 2458826.260255189105
(2019-Dec-08.76025519)
3.9681e-05 TDB
period 1308.854284084241
3.58
5.4886e-06
1.503e-08
d
yr
n .2750497166702399 1.1534e-09 deg/d
Q 2.823414503646904 7.8932e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2549  
   data-arc span      11334 days (31.03 yr)  
   first obs. used      1990-03-02  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40827  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:06:01  

Additional Information
 Earth MOID = .883159 au 
 Jupiter MOID = 2.47605 au 
 T_jup = 3.510 
[ 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 13.54   n/a E2021B10  
diameter diameter 4.773 km 0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Clark, M. (2007) Minor Planet Bull. 34, 19-22.]
geometric albedo albedo 0.371   0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6790 Pingouin           Discovered 1991 Sept. 28 by S. Otomo at Kiyosato.
Named for an Arctic bird, similar to the penguin of Antarctica. The pingouin become extinct in Newfoundland in 1844.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990728/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1991 SF1 = 1990 EN 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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