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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 ]

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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 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 
[ 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 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

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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
1918-Dec-31 02:41 < 00:01 Jupiter 1.88924193057491 1.88924138347779 1.88924247767193 2.34777961170682 2.14834571912467 2421958.611830680 0.88635087750546 166.413184208722 43.5499425355574 82.3938861822817 1372777.09769971 T 114 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:18 2021-Feb-24 00:46
2002-Aug-16 13:05 < 00:01 Jupiter 1.9550042249632 1.95500363576464 1.95500481498134 0.954810778861854 0.212476582964615 2452503.044830443 0.351908778507054 59681.6721310519 730.722063221801 38.114347646405 15007738.6683232 T 114 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:18 2021-Feb-24 00:46
2025-Feb-23 08:06 < 00:01 Jupiter 1.94004281657812 1.94004232289742 1.94004331025893 3.29749538509781 3.16232129900625 2460729.837749033 0.248671931862947 79.9310520748074 18.2923867552121 -81.9855577887263 2026908.15299784 T 114 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:18 2021-Feb-24 00:46
2108-Sep-18 17:17 < 00:01 Jupiter 1.91017379772829 1.91017325323945 1.91017434221712 2.18289182623223 1.96930516972563 2491252.220108979 0.921935926666936 170.200024749871 57.4401182712695 79.9679115824127 1189050.44453743 T 114 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:18 2021-Feb-24 00:46
2192-May-11 05:31 00:02 Jupiter 1.94527886214154 1.94527819285697 1.94527953142886 0.675657789073171 n/a 2521802.729871897 1.89508984840907 397.90398769877 31.9370186340747 -88.6000904373328 9107035.966365 F 114 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:18 2021-Feb-24 00:46

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