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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 ]

[ hide orbit diagram ]

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 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2272603513207339 1.6052e-08  
a 2.762964068895665 8.767e-09 au
q 2.135051883911872 4.3285e-08 au
i 6.219255172555621 7.726e-07 deg
node 66.89122992725261 5.2863e-06 deg
peri 271.2178797054944 8.5988e-06 deg
M 214.029347720624 1.0519e-05 deg
tp 2459880.680740374859
(2022-Oct-28.18074037)		 5.0944e-05 TDB
period 1677.495186267287
4.59		 7.9842e-06
2.186e-08		 d
yr
n .2146056828938278 1.0214e-09 deg/d
Q 3.390876253879458 1.0759e-08 au
   Orbit Determination Parameters
   # obs. used (total)      3428  
   data-arc span      46124 days (126.28 yr)  
   first obs. used      1894-12-02  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4212  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:49:25  

Additional Information
 Earth MOID = 1.13536 au 
 Jupiter MOID = 2.04197 au 
 T_jup = 3.294 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456657.5 (2013-Dec-31.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2271769285299403 1.5792e-08  
q 2.134677867880587 4.2531e-08 au
tp 2456516.595133661072
(2013-Aug-12.09513366)		 4.2623e-05 TDB
node 67.32113946309894 5.2912e-06 deg
peri 269.5579791054059 8.5683e-06 deg
i 6.219427484668159 7.7566e-07 deg
   Orbit Determination Parameters
   # obs. used (total)      3428  
   data-arc span      46124 days (126.28 yr)  
   first obs. used      1894-12-02  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4212  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:49:25  

Additional Information
 Jupiter MOID = 2.04197 au 
 T_jup = 3.294 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.493846390901421E-16 -6.633289991339128E-16 4.323102840898555E-13 -6.197799841939867E-15 6.502768404130383E-14 -7.013108440637804E-16
q -6.633289991339128E-16 1.808916491221537E-15 -1.077305389471442E-12 1.611048841540921E-14 -1.581043157987293E-13 1.794880545852527E-15
tp 4.323102840898555E-13 -1.077305389471442E-12 1.816718656232812E-9 -1.159910780325268E-11 2.887179830994402E-10 -1.70135865085704E-12
node -6.197799841939867E-15 1.611048841540921E-14 -1.159910780325268E-11 2.799648649175487E-11 -2.910031138932191E-11 3.936272331805128E-12
peri 6.502768404130383E-14 -1.581043157987293E-13 2.887179830994402E-10 -2.910031138932191E-11 7.34160733429387E-11 -4.09302657320049E-12
i -7.013108440637804E-16 1.794880545852527E-15 -1.70135865085704E-12 3.936272331805128E-12 -4.09302657320049E-12 6.016509758816647E-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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