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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05965714116785375 3.3915e-08  
a 3.023669061529342 1.4974e-08 au
q 2.843285609480815 1.029e-07 au
i 11.00718385108071 3.556e-06 deg
node 101.3178851568324 2.1496e-05 deg
peri 198.5567065467955 4.2085e-05 deg
M 240.1685104358414 3.7935e-05 deg
tp 2460035.746366632561
(2023-Apr-01.24636663)
0.00020348 TDB
period 1920.435878955754
5.26
1.4266e-05
3.906e-08
d
yr
n .1874574433569486 1.3925e-09 deg/d
Q 3.20405251357787 1.5868e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3286  
   data-arc span      28573 days (78.23 yr)  
   first obs. used      1943-04-06  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36769  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:42:39  

Additional Information
 Earth MOID = 1.82903 au 
 Jupiter MOID = 1.95405 au 
 T_jup = 3.215 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457333.5 (2015-Nov-07.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06031295223817222 3.3658e-08  
q 2.843678639021771 1.0219e-07 au
tp 2458101.400275463277
(2017-Dec-13.90027546)
0.00019943 TDB
node 101.4813040787765 2.147e-05 deg
peri 195.7798546793317 4.1862e-05 deg
i 11.01190830776109 3.5592e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3286  
   data-arc span      28573 days (78.23 yr)  
   first obs. used      1943-04-06  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36769  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 22:42:39  

Additional Information
 Jupiter MOID = 1.95405 au 
 T_jup = 3.215 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.132875401023349E-15 -3.406431018436309E-15 1.788000028342233E-12 -5.451356710858746E-16 3.351429562574841E-13 8.38110723480523E-16
q -3.406431018436309E-15 1.044276202302843E-14 -4.775290320491839E-12 4.377245074100286E-15 -9.181434494050024E-13 -2.523188403205411E-15
tp 1.788000028342233E-12 -4.775290320491839E-12 3.977424231795122E-8 -1.61000711479905E-11 7.191067750501586E-9 4.800178315556309E-12
node -5.451356710858746E-16 4.377245074100286E-15 -1.61000711479905E-11 4.609530162154618E-10 -4.552144511891782E-10 1.902438795922004E-11
peri 3.351429562574841E-13 -9.181434494050024E-13 7.191067750501586E-9 -4.552144511891782E-10 1.752403400535268E-9 -1.7803631933801E-11
i 8.38110723480523E-16 -2.523188403205411E-15 4.800178315556309E-12 1.902438795922004E-11 -1.7803631933801E-11 1.266819608512368E-11

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 11.37   n/a MPO614063  
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. 2020-October); 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.]
[McNeill, A.; Mommert, M.; Trilling, D.E.; Llama, J.; Skiff, B. (2019) Ap. J. Suppl. Series 245, id.29.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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