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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 115 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3303781415330856 1.8401e-08  
a 2.78047259864697 4.9861e-09 au
q 1.861865228922315 5.0364e-08 au
i 14.8732025609906 7.2611e-07 deg
node 212.4276558465654 1.413e-06 deg
peri 90.75356979147909 2.3e-06 deg
M 153.6680428532805 2.1705e-06 deg
tp 2458477.634637151190
(2018-Dec-25.13463715)		 8.7636e-06 TDB
period 1693.465510418688
4.64		 4.5553e-06
1.247e-08		 d
yr
n .2125818316258443 5.7183e-10 deg/d
Q 3.699079968371625 6.6335e-09 au
   Orbit Determination Parameters
   # obs. used (total)      3017  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      42899 days (117.45 yr)  
   first obs. used      1903-09-21  
   last obs. used      2021-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36555  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 11:07:06  

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

[ 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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