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3772 Piaf (1982 UR7)
Classification: Main-belt Asteroid          SPK-ID: 2003772
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05960522144415249 3.4882e-08  
a 3.024149947843707 1.6679e-08 au
q 2.84389482052216 1.0449e-07 au
i 11.00818384519854 3.7891e-06 deg
node 101.3229208457012 2.3391e-05 deg
peri 198.2416586157644 4.5163e-05 deg
M 166.2885944762126 3.9526e-05 deg
tp 2458113.214528450397
(2017-Dec-25.71452845)
0.00021061 TDB
period 1920.894038247164
5.26
1.5892e-05
4.351e-08
d
yr
n .187412732213227 1.5505e-09 deg/d
Q 3.204405075165253 1.7673e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2715  
   data-arc span      28146 days (77.06 yr)  
   first obs. used      1943-04-06  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38801  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:59:00  

Additional Information
 Earth MOID = 1.82996 au 
 Jupiter MOID = 1.95496 au 
 T_jup = 3.215 
[ 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 11.3   n/a MPO365291  
diameter diameter 18.984 km 0.245 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.376 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.181   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

3772 Piaf (1982 UR7)          Discovered 1982-Oct-21 by Karachkina, L. G. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1982 UR7 = 1943 GN = 1950 TR2 = 1958 DR = 1969 FJ = 1972 XK2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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