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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05965714089957204 3.3907e-08  
a 3.023669061336588 1.4969e-08 au
q 2.843285610110754 1.0288e-07 au
i 11.00718389841202 3.5541e-06 deg
node 101.3178851279859 2.1496e-05 deg
peri 198.5567066659277 4.2084e-05 deg
M 240.1685104019843 3.7935e-05 deg
tp 2460035.746366752047
(2023-Apr-01.24636675)
0.00020348 TDB
period 1920.435878772116
5.26
1.4261e-05
3.904e-08
d
yr
n .1874574433748738 1.3921e-09 deg/d
Q 3.204052512562421 1.5862e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3293  
   data-arc span      28581 days (78.25 yr)  
   first obs. used      1943-04-06  
   last obs. used      2021-07-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36737  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 09:56:18  

Additional Information
 Earth MOID = 1.82903 au 
 Jupiter MOID = 1.95405 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 11.37   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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1978-Mar-25 18:40 < 00:01 Jupiter 1.97700471627642 1.97700438349869 1.97700504905436 3.93838351378331 3.82805305002937 2443593.277783228 0.804067940095569 70.4511359832975 12.4422588360756 -83.0711147973602 4681942.55796893 T 48 CATAB v2.0g-lin.ifort 2021-Aug-25 09:56:49 2021-Aug-25 09:56
2025-May-24 13:19 < 00:01 Jupiter 1.95764889358979 1.95764860984604 1.95764917733354 3.90045855377773 3.78790578333025 2460820.055130735 0.256751947606362 56.853796554182 12.210902252338 -87.5620473552923 4998522.2745276 T 48 CATAB v2.0g-lin.ifort 2021-Aug-25 09:56:49 2021-Aug-25 09:56
2072-Jul-23 00:38 00:01 Jupiter 1.94574889626024 1.94574860347784 1.94574918904263 3.85063573427274 3.73587425932633 2478046.526436788 1.23813831160534 71.9457523906568 12.8712620770874 -89.5113986955667 4737025.41626133 T 48 CATAB v2.0g-lin.ifort 2021-Aug-25 09:56:49 2021-Aug-25 09:56
2119-Sep-21 02:58 00:02 Jupiter 1.94810889020394 1.94810854114161 1.94810923926638 3.80005253240108 3.68385869559763 2495271.623738392 2.27836449970333 67.7562744071009 16.3004068698766 86.5760376166142 4618769.38381972 T 48 CATAB v2.0g-lin.ifort 2021-Aug-25 09:56:49 2021-Aug-25 09:56
2166-Nov-17 20:27 00:03 Jupiter 1.96558698777293 1.96558642925677 1.96558754628931 3.76663066087186 3.65043210634833 2512496.352043675 3.35067021534062 75.1206436752074 25.0301575411632 -78.5082505903362 4781333.34632245 T 48 CATAB v2.0g-lin.ifort 2021-Aug-25 09:56:49 2021-Aug-25 09:56

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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