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JPL Small-Body Database Browser
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386 Siegena (A894 EB)
Classification: Main-belt Asteroid          SPK-ID: 2000386
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 99 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1687465476849862 3.2401e-08  
a 2.899545275161502 8.9373e-09 au
q 2.410257020121685 9.3381e-08 au
i 20.2096969232915 3.4037e-06 deg
node 166.6769678263392 1.2009e-05 deg
peri 220.3548475371014 1.7125e-05 deg
M 265.6579279197031 1.4426e-05 deg
tp 2459073.102678212808
(2020-Aug-11.60267821)
7.2964e-05 TDB
period 1803.40499636051
4.94
8.338e-06
2.283e-08
d
yr
n .1996223813988116 9.2295e-10 deg/d
Q 3.388833530201319 1.0445e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3229  
   data-arc span      45920 days (125.72 yr)  
   first obs. used      1894-03-05  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4221  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:06:32  

Additional Information
 Earth MOID = 1.44016 au 
 Jupiter MOID = 2.14796 au 
 T_jup = 3.176 
[ 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 7.43   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
magnitude slope G 0.16   n/a PDS3 (MPC 17258) Fit
diameter diameter 165.01 km 2.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
rotation period rot_per 9.763 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Zappala, V.; Scaltriti, F.; Lagerkvist, C.-I.; Rickman, H.; Harris, A.W. (1982) Icarus 52, 196-201.]
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Stephens, R.D. (2007) Minor Planet Bull. 34, 64-65.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
[Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.0692   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19
B-V BV 0.723   0.011 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=3.84, mean=16.39, max.=21.64) deg.
U-B UB 0.407   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=3.84, mean=16.39, max.=21.64) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B C   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)

386 Siegena (A894 EB)          Discovered 1894-Mar-01 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A894 EB = 1948 EW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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