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348 May (A892 WE)
Classification: Main-belt Asteroid          SPK-ID: 2000348
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07060506745168345 3.231e-08  
a 2.968083509251146 9.746e-09 au
q 2.758521772878239 9.7619e-08 au
i 9.758933213833425 3.6016e-06 deg
node 89.91427415320433 2.099e-05 deg
peri 13.86473281292658 3.298e-05 deg
M 291.0188202071078 2.515e-05 deg
tp 2459358.382710540744
(2021-May-23.88271054)
0.00013061 TDB
period 1867.723575930245
5.11
9.1993e-06
2.519e-08
d
yr
n .1927480086664843 9.4936e-10 deg/d
Q 3.177645245624052 1.0434e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3360  
   data-arc span      46738 days (127.96 yr)  
   first obs. used      1892-11-29  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42042  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:52:53  

Additional Information
 Earth MOID = 1.77643 au 
 Jupiter MOID = 1.96747 au 
 T_jup = 3.238 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455822.5 (2011-Sep-18.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06704591628716346 3.2142e-08  
q 2.770404096179357 9.6609e-08 au
tp 2455611.087140265660
(2011-Feb-18.58714027)
0.00013882 TDB
node 90.06783396084671 2.1044e-05 deg
peri 12.21446048389628 3.4231e-05 deg
i 9.744787338531093 3.5957e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3360  
   data-arc span      46738 days (127.96 yr)  
   first obs. used      1892-11-29  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42042  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:52:53  

Additional Information
 Jupiter MOID = 1.96747 au 
 T_jup = 3.238 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.033115285578701E-15 -3.091371012455041E-15 4.963017538042607E-14 -3.437360476128871E-15 1.580042262582184E-14 4.097545340388134E-17
q -3.091371012455041E-15 9.333373028947025E-15 -2.310350384595525E-13 8.440419543268205E-15 -6.133637373430698E-14 4.185978361046156E-16
tp 4.963017538042607E-14 -2.310350384595525E-13 1.92714479064285E-8 2.751025368973844E-12 3.763300090583636E-9 -2.449211255390182E-12
node -3.437360476128871E-15 8.440419543268205E-15 2.751025368973844E-12 4.428305404999496E-10 -4.359546157417368E-10 -3.97132053579563E-13
peri 1.580042262582184E-14 -6.133637373430698E-14 3.763300090583636E-9 -4.359546157417368E-10 1.171774468271248E-9 -3.01325637752258E-14
i 4.097545340388134E-17 4.185978361046156E-16 -2.449211255390182E-12 -3.97132053579563E-13 -3.01325637752258E-14 1.292910821645786E-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 9.4   n/a MPO431494  
diameter diameter 82.82 km 2.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 18
rotation period rot_per 7.3812 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Sauppe, J.; Torno, S.; Lemke-Oliver, R.; Ditteon, R. (2007) Minor Planet Bull. 34, 119-122.]
[Stephens, R.D. (2007) Minor Planet Bull. 34, 102-103.]
[Fauerbach, M.; Marks, S.A.; Lucas, M.P. (2008) Minor Planet Bull. 35, 44-46.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.0448   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 18
SMASSII spectral type spec_B X   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)

348 May (A892 WE)          Discovered 1892-Nov-28 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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