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394 Arduina (A894 WB)
Classification: Main-belt Asteroid          SPK-ID: 2000394
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2272603524041075 1.5987e-08  
a 2.762964072669823 8.6713e-09 au
q 2.135051883834991 4.3158e-08 au
i 6.219255170080989 7.7202e-07 deg
node 66.8912298997964 5.2823e-06 deg
peri 271.2178808828104 8.5753e-06 deg
M 214.0293451936774 1.0458e-05 deg
tp 2459880.680753543366
(2022-Oct-28.18075354)
5.062e-05 TDB
period 1677.495189704429
4.59
7.897e-06
2.162e-08
d
yr
n .2146056824541067 1.0103e-09 deg/d
Q 3.390876261504655 1.0642e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3449  
   data-arc span      46132 days (126.30 yr)  
   first obs. used      1894-12-02  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42309  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:20:40  

Additional Information
 Earth MOID = 1.13536 au 
 Jupiter MOID = 2.04197 au 
 T_jup = 3.294 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456689.5 (2014-Feb-01.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2271577231444861 1.5728e-08  
q 2.134690473880902 4.2413e-08 au
tp 2456516.593846648098
(2013-Aug-12.09384665)
4.248e-05 TDB
node 67.32103031160089 5.2872e-06 deg
peri 269.5583136329333 8.5448e-06 deg
i 6.219442248345536 7.7507e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3449  
   data-arc span      46132 days (126.30 yr)  
   first obs. used      1894-12-02  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42309  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:20:40  

Additional Information
 Jupiter MOID = 2.04197 au 
 T_jup = 3.294 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.473630150575429E-16 -6.589168339954414E-16 4.275483465787665E-13 -6.108368680114589E-15 6.42243091648765E-14 -6.88584505011769E-16
q -6.589168339954414E-16 1.798862707019479E-15 -1.067991365397894E-12 1.591225480667428E-14 -1.565524095986999E-13 1.766749081274558E-15
tp 4.275483465787665E-13 -1.067991365397894E-12 1.80457183004363E-9 -1.138727155980137E-11 2.866091134112499E-10 -1.670751793550001E-12
node -6.108368680114589E-15 1.591225480667428E-14 -1.138727155980137E-11 2.795472836909581E-11 -2.902756748545642E-11 3.930108593631361E-12
peri 6.42243091648765E-14 -1.565524095986999E-13 2.866091134112499E-10 -2.902756748545642E-11 7.301278985670193E-11 -4.082379847439555E-12
i -6.88584505011769E-16 1.766749081274558E-15 -1.670751793550001E-12 3.930108593631361E-12 -4.082379847439555E-12 6.007410058493356E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.77   n/a E2021B10 IRAS observations used: 4
diameter diameter 29.970 km 0.269 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 16.53 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Gil-Hutton, R. (1992) Rev. Mexicana Astron. Astrof. 24, 43-44.]
[Lagerkvist, C.-I.; Magnusson, P.; Debehogne, H.; Hoffmann, M.; et al. (1992) Astron. Astrophys. Suppl. Ser. 95, 461-470.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.294   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.826   0.029 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=4.23, mean=12.50, max.=18.40) deg.
U-B UB 0.411   0.044 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=4.23, mean=12.50, max.=18.40) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B S   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)

394 Arduina (A894 WB)          Discovered 1894-Nov-19 by Borrelly, A. at Marseille
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A894 WB = A906 HA = A912 TB = A916 LB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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