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1082 Pirola (1927 UC)
Classification: Main-belt Asteroid          SPK-ID: 2001082
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1812803150554204 3.5063e-08  
a 3.124092601923324 1.2431e-08 au
q 2.557756110784356 1.1144e-07 au
i 1.852479075634583 3.8812e-06 deg
node 147.9681612661502 9.5707e-05 deg
peri 186.7386388055177 9.6135e-05 deg
M 310.0939921186543 1.122e-05 deg
tp 2459280.098350259549
(2021-Mar-06.59835026)
6.4078e-05 TDB
period 2016.899575152387
5.52
1.2038e-05
3.296e-08
d
yr
n .1784917823550041 1.0654e-09 deg/d
Q 3.690429093062292 1.4685e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3441  
   data-arc span      33698 days (92.26 yr)  
   first obs. used      1927-10-28  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .432  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:45:10  

Additional Information
 Earth MOID = 1.54789 au 
 Jupiter MOID = 1.69056 au 
 T_jup = 3.189 
[ 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 10.4   n/a MPO473777 IRAS observations used: 6
diameter diameter 42.607 km 0.476 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 15.8525 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Baker, R.E.; Pilcher, F.; Benishek, V. (2011) Minor Planet Bull. 38, 111-113.]
[Gartrelle, G. (2012) Minor Planet Bull. 39, 40-46.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.052   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.705   0.049 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.29, mean=8.34, max.=11.38) deg.
U-B UB 0.315   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.29, mean=8.34, max.=11.38) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

1082 Pirola (1927 UC)          Discovered 1927-Oct-28 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1927 UC = 1931 JQ = 1951 AH = 1952 DS = 1971 YJ = A916 UP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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