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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 109 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3304379686457712 2.953e-08  
a 2.780070050665675 5.3944e-09 au
q 1.861429350430763 8.1654e-08 au
i 14.87475271760316 4.573e-06 deg
node 212.4398770968176 1.6149e-05 deg
peri 90.71191518042033 1.6934e-05 deg
M 111.1928861907899 7.244e-06 deg
tp 2458477.554370141387
(2018-Dec-25.05437014)
3.3341e-05 TDB
period 1693.097761902455
4.64
4.9279e-06
1.349e-08
d
yr
n .212628005364253 6.1887e-10 deg/d
Q 3.698710750900588 7.177e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2555  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      42505 days (116.37 yr)  
   first obs. used      1903-09-21  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39065  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:26:22  

Additional Information
 Earth MOID = .917918 au 
 Jupiter MOID = 1.91549 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 8.4   n/a MPO502156 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. 2019-August); 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 1.88924190424018 1.88924131424037 1.88924249423999 2.34777935941404 2.1483454405022 2421958.611841649 0.889998973925264 168.170302226917 44.2416486152565 82.6679632752014 1339129.4488975 T 109 CATAB v2.0f-lin.ifort 2020-Feb-22 15:26:40 2020-Feb-22 15:26
2002-Aug-16 13:05 < 00:01 Jupiter 1.9550041903244 1.95500355685267 1.95500482446679 0.954810626871779 0.212475863833627 2452503.044836883 0.360159901101484 60328.2583668732 751.462073740568 38.1077188012536 14590792.5541885 T 109 CATAB v2.0f-lin.ifort 2020-Feb-22 15:26:40 2020-Feb-22 15:26
2025-Feb-23 08:06 < 00:01 Jupiter 1.94004280351865 1.9400422724847 1.94004333455272 3.29749524925158 3.16232115642386 2460729.837750535 0.265098515510777 84.8927934384409 19.4386795337255 -82.4071264215381 1918996.80477493 T 109 CATAB v2.0f-lin.ifort 2020-Feb-22 15:26:40 2020-Feb-22 15:26
2108-Sep-18 17:17 < 00:01 Jupiter 1.91017377360849 1.91017318564065 1.91017436157634 2.18289186876995 1.96930521403369 2491252.220101381 0.931712611590466 174.546275343957 58.1064747415882 80.2406549650369 1161487.03606999 T 109 CATAB v2.0f-lin.ifort 2020-Feb-22 15:26:40 2020-Feb-22 15:26
2192-May-11 05:31 00:02 Jupiter 1.94527882871079 1.94527811704557 1.94527954037859 0.675657736025572 n/a 2521802.729872094 1.90739988080536 401.723681076548 34.0821499294378 -88.5842772749477 8533783.21425151 F 109 CATAB v2.0f-lin.ifort 2020-Feb-22 15:26:40 2020-Feb-22 15:26

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