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182 Elsa (A878 CC)
Classification: Main-belt Asteroid          SPK-ID: 2000182
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.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 103 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1864822192132134 3.4307e-08  
a 2.416075104329307 5.7981e-09 au
q 1.965520057088182 8.3149e-08 au
i 2.005421637608766 3.9798e-06 deg
node 107.1839277073042 0.00012604 deg
peri 310.8437332011688 0.0001266 deg
M 27.09470482571808 1.2403e-05 deg
tp 2458897.260475483472
4.7183e-05 TDB
period 1371.715582989932
n .2624450756878529 9.4472e-10 deg/d
Q 2.866630151570432 6.8793e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2686  
   data-arc span      42390 days (116.06 yr)  
   first obs. used      1904-01-14  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51539  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:19:37  

Additional Information
 Earth MOID = .978468 au 
 Jupiter MOID = 2.47211 au 
 T_jup = 3.492 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.1   n/a MPO492750 IRAS observations used: 14
diameter diameter 39.520 km 0.387 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 80.088 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W. (1980) Icarus 43, 20-32.]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Gandolfi, D.; Cigna, M.; Fulvio, D.; Blanco, C. (2009) Planet. Space Sci. 57, 1-9.]
[Pilcher, F.; Benishek, V.; Krajewski, R. (2009) Minor Planet Bull. 36, 40.]
[Durech, J. (2011) Database of Asteroid Models from Inversion Techniques (DAMIT).]
geometric albedo albedo 0.196   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.862   0.043 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=10.53, mean=17.27, max.=27.13) deg.
U-B UB 0.425   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=10.53, mean=16.47, max.=27.13) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo
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)

182 Elsa (A878 CC)          Discovered 1878-Feb-07 by Palisa, J. at Pola
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A878 CC = 1948 XS = 1950 HY 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-Oct-26 08:47 UT
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