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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05961293597279625 3.4035e-08  
a 3.024106496451329 1.5107e-08 au
q 2.843830629503458 1.0313e-07 au
i 11.00762888254961 3.6092e-06 deg
node 101.3215574746079 2.155e-05 deg
peri 198.3833658511821 4.2275e-05 deg
M 203.6136384191709 3.801e-05 deg
tp 2460034.930987029530
(2023-Mar-31.43098703)
0.00020417 TDB
period 1920.852638900802
5.26
1.4393e-05
3.941e-08
d
yr
n .187416771442711 1.4044e-09 deg/d
Q 3.204382363399199 1.6007e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3107  
   data-arc span      28473 days (77.95 yr)  
   first obs. used      1943-04-06  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37159  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:11:28  

Additional Information
 Earth MOID = 1.82797 au 
 Jupiter MOID = 1.95445 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 11.38   n/a MPCxxxxx  
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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