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395 Delia (A894 WC)
Classification: Main-belt Asteroid          SPK-ID: 2000395
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 61 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08479719800877174 1.782e-08  
a 2.785465037099361 7.994e-09 au
q 2.549265406801936 4.5929e-08 au
i 3.354037560218213 3.6678e-07 deg
node 259.2808940225401 4.0701e-06 deg
peri 11.01373423296116 9.8522e-06 deg
M 192.8492015700308 1.276e-05 deg
tp 2459988.907866590617
(2023-Feb-13.40786659)
6.2898e-05 TDB
period 1698.028574428475
4.65
7.3098e-06
2.001e-08
d
yr
n .2120105665013142 9.1267e-10 deg/d
Q 3.021664667396787 8.6719e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3830  
   data-arc span      42886 days (117.42 yr)  
   first obs. used      1903-10-24  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41695  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:20:43  

Additional Information
 Earth MOID = 1.53141 au 
 Jupiter MOID = 2.04691 au 
 T_jup = 3.324 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.48   n/a E2021B10 IRAS observations used: 3
diameter diameter 44.189 km 0.455 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 19.681 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
[Ditteon, R.; Adam, A.; Doyel, M.; Gibson, J.; et al. (2018) Minor Planet Bull. 45, 13-16.]
[Pilcher, F. (2020) Minor Planet Bull. 47, 34-36.]
[Polakis, T. (2020) Minor Planet Bull. 47, 94-101.]
geometric albedo albedo 0.033   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.726   0.029 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=.49, mean=3.98, max.=11.13) deg.
U-B UB 0.356   0.078 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=1.71, mean=2.16, max.=2.61) 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 Ch   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)

395 Delia (A894 WC)          Discovered 1894-Nov-30 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A894 WC = 1926 SA = 1972 JF = A916 OG = A924 EM 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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