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393 Lampetia (A894 VC)
Classification: Main-belt Asteroid          SPK-ID: 2000393
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 114 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3303781322356116 2.9294e-08  
a 2.780472598670252 5.3948e-09 au
q 1.861865254789277 8.0994e-08 au
i 14.87319258044753 4.2481e-06 deg
node 212.4276616342204 1.5877e-05 deg
peri 90.75357060920413 1.6563e-05 deg
M 153.6680407021231 7.1855e-06 deg
tp 2458477.634647261308
(2018-Dec-25.13464726)
3.275e-05 TDB
period 1693.465510439958
4.64
4.9286e-06
1.349e-08
d
yr
n .2125818316231743 6.1869e-10 deg/d
Q 3.699079942551227 7.1772e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2942  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      42860 days (117.34 yr)  
   first obs. used      1903-09-21  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3691  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:46:09  

Additional Information
 Earth MOID = .916632 au 
 Jupiter MOID = 1.91496 au 
 T_jup = 3.205 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456408.5 (2013-Apr-26.0) TDB
Reference: JPL 114 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3316983450817776 2.9067e-08  
q 1.856324095382314 8.0273e-08 au
tp 2456787.387412078348
(2014-May-09.88741208)
3.0727e-05 TDB
node 212.4678173958836 1.5879e-05 deg
peri 90.94134444115291 1.6566e-05 deg
i 14.87921996365434 4.2499e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2942  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      42860 days (117.34 yr)  
   first obs. used      1903-09-21  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .3691  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:46:09  

Additional Information
 Jupiter MOID = 1.91496 au 
 T_jup = 3.205 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.448672378106188E-16 -2.331035204230279E-15 -1.452308125446712E-13 3.657744714490923E-14 -8.515387895501498E-14 1.37880269775761E-14
q -2.331035204230279E-15 6.443777761561525E-15 4.359915139629786E-13 -1.005031526804759E-13 2.3932298072685E-13 -3.89065106168084E-14
tp -1.452308125446712E-13 4.359915139629786E-13 9.441699432561686E-10 2.652457180690257E-11 1.661060639801068E-10 5.563914204749454E-12
node 3.657744714490923E-14 -1.005031526804759E-13 2.652457180690257E-11 2.521379221181135E-10 -2.383762958701614E-10 6.706625575264589E-12
peri -8.515387895501498E-14 2.3932298072685E-13 1.661060639801068E-10 -2.383762958701614E-10 2.744286606280481E-10 -5.561818660937496E-12
i 1.37880269775761E-14 -3.89065106168084E-14 5.563914204749454E-12 6.706625575264589E-12 -5.561818660937496E-12 1.806187869251736E-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 8.41   n/a E2021B10 IRAS observations used: 7
diameter diameter 116.191 km 27.770 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 38.455 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Scaltriti, F.; Zappala, V.; Schober, H.J. (1979) Icarus 37, 133-141.]
[Holliday, B. (2001) Minor Planet Bull. 28, 26-28.]
[Pilcher, F.; Marciniak, A.; Oey, J. (2017) Minor Planet Bull. 44, 238.]
geometric albedo albedo 0.022   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
B-V BV 0.740   0.026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=14.24, mean=16.70, max.=20.76) deg.
U-B UB 0.324   0.039 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=14.24, mean=14.67, max.=15.10) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B Xc   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

393 Lampetia (A894 VC)          Discovered 1894-Nov-04 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A894 VC = A907 GR 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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