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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 112 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3304379688616159 2.9341e-08  
a 2.780070050578016 5.383e-09 au
q 1.861429349772007 8.1104e-08 au
i 14.87475292513003 4.4314e-06 deg
node 212.4398770996085 1.5886e-05 deg
peri 90.71191537545597 1.6648e-05 deg
M 111.1928861390538 7.1981e-06 deg
tp 2458477.554370409438
(2018-Dec-25.05437041)
3.3118e-05 TDB
period 1693.097761822377
4.64
4.9175e-06
1.346e-08
d
yr
n .2126280053743097 6.1756e-10 deg/d
Q 3.698710751384026 7.1618e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2788  
   # delay obs. used      1  
   # Doppler obs. used      0  
   data-arc span      42782 days (117.13 yr)  
   first obs. used      1903-09-21  
   last obs. used      2020-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37777  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:53:13  

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. 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

[ hide close-approach data ]
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 1.88924191254708 1.88924134374443 1.88924248134974 2.34777948366325 2.14834557720323 2421958.611832981 0.888479032109237 167.484645496453 43.702366393587 82.5451448083 1349156.85575756 T 112 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:21 2020-Dec-18 01:53
2002-Aug-16 13:05 < 00:01 Jupiter 1.95500419873836 1.95500358554148 1.95500481281205 0.954810756504155 0.212476455142516 2452503.044828803 0.355353361993321 59787.0637195841 741.241133901937 38.1147774854875 14785364.2365056 T 112 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:21 2020-Dec-18 01:53
2025-Feb-23 08:06 < 00:01 Jupiter 1.94004281213865 1.94004229945892 1.94004332481838 3.29749541932298 3.16232133437844 2460729.837741487 0.25704160708467 82.94122446459 18.7016192343935 -82.163460139502 1958607.03187421 T 112 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:21 2020-Dec-18 01:53
2108-Sep-18 17:17 < 00:01 Jupiter 1.91017378315978 1.91017321650363 1.91017434981593 2.18289189826181 1.96930524785006 2491252.220096132 0.925039828364414 172.551072694707 57.6076724785437 80.2239235277234 1170087.15858361 T 112 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:21 2020-Dec-18 01:53
2192-May-11 05:31 00:02 Jupiter 1.94527883439844 1.94527814239407 1.94527952640533 0.675658017072886 n/a 2521802.729843914 1.89761809162294 399.389625698392 33.1521801344944 -88.6213349774058 8773305.67855329 F 112 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:21 2020-Dec-18 01:53

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