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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .181280588852158 3.5056e-08  
a 3.120343010870245 1.2693e-08 au
q 2.554685392438971 1.1094e-07 au
i 1.852399227006304 3.886e-06 deg
node 148.0086268575394 9.5822e-05 deg
peri 187.081620711611 9.6251e-05 deg
M 238.2330401421941 1.0923e-05 deg
tp 2459281.471436137367
(2021-Mar-07.97143614)
6.4056e-05 TDB
period 2013.269587215835
5.51
1.2284e-05
3.363e-08
d
yr
n .1788136086125686 1.0911e-09 deg/d
Q 3.686000629301518 1.4994e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3427  
   data-arc span      33531 days (91.80 yr)  
   first obs. used      1927-10-28  
   last obs. used      2019-08-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43367  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:14:45  

Additional Information
 Earth MOID = 1.544 au 
 Jupiter MOID = 1.6931 au 
 T_jup = 3.190 
[ 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 10.41   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 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-January); 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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