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47 Aglaja (A857 RA)
Classification: Main-belt Asteroid          SPK-ID: 2000047
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 123 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1299724269616476 1.7083e-08  
a 2.882399927086181 6.3808e-09 au
q 2.507767413088714 4.7895e-08 au
i 4.974848947599182 2.3908e-07 deg
node 3.057988748220122 4.582e-06 deg
peri 314.9087570759642 8.8333e-06 deg
M 172.9073428933215 1.0416e-05 deg
tp 2458341.999168291385
(2018-Aug-11.49916829)
5.0157e-05 TDB
period 1787.433050809081
4.89
5.9353e-06
1.625e-08
d
yr
n .2014061448830468 6.6879e-10 deg/d
Q 3.257032441083648 7.2102e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3574  
   data-arc span      58823 days (161.05 yr)  
   first obs. used      1860-02-24  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43737  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:12:16  

Additional Information
 Earth MOID = 1.49588 au 
 Jupiter MOID = 2.04938 au 
 T_jup = 3.276 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456947.5 (2014-Oct-17.0) TDB
Reference: JPL 123 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1329041350496977 1.7193e-08  
q 2.496475715934263 4.8357e-08 au
tp 2456550.536489887037
(2013-Sep-15.03648989)
4.6689e-05 TDB
node 3.128043182769111 4.5769e-06 deg
peri 313.8837578007225 8.7477e-06 deg
i 4.983154935920235 2.385e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3574  
   data-arc span      58823 days (161.05 yr)  
   first obs. used      1860-02-24  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43737  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:12:16  

Additional Information
 Jupiter MOID = 2.04938 au 
 T_jup = 3.276 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.956021050762031E-16 -8.264698485057385E-16 5.957857008878578E-13 -5.511178337410009E-15 9.28564618409718E-14 -4.16832582352506E-16
q -8.264698485057385E-16 2.338369655711717E-15 -1.609225109081873E-12 1.549786093487437E-14 -2.483728173909684E-13 1.173762024698989E-15
tp 5.957857008878578E-13 -1.609225109081873E-12 2.179856697197703E-9 5.045080127273525E-13 3.498288960224688E-10 -5.444688144691063E-13
node -5.511178337410009E-15 1.549786093487437E-14 5.045080127273525E-13 2.094777164344418E-11 -2.011491198047763E-11 4.673053137980106E-13
peri 9.28564618409718E-14 -2.483728173909684E-13 3.498288960224688E-10 -2.011491198047763E-11 7.652308285253608E-11 -5.340715721980494E-13
i -4.16832582352506E-16 1.173762024698989E-15 -5.444688144691063E-13 4.673053137980106E-13 -5.340715721980494E-13 5.687986711014756E-14

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.19   n/a E2021B10 IRAS observations used: 20
magnitude slope G 0.16   n/a PDS3 (MPC 17257) Fit
diameter diameter 168.174 km 1.222 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 13.178 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Debehogne, H. (1979) Messenger 18, 27-28.]
[Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.]
[Millis, R.L.; Wasserman, L.H.; Bowell, E.; Harris, A.W.; et al. (1989) Icarus 81, 375-385.]
[Chernova, G.P.; Lupishko, D.F.; Shevchenko, V.G.; Kiselev, N.N.; Saljes, R. (1991) Kin. Fiz. Neb. Tel 7, 20-26; Kinematics and Physics of Celestial Bodies 7, 15-21.]
[Michalowski, T. (1996) Icarus 123, 456-462.]
[Pilcher, F. (2012) Minor Planet Bull. 39, 220-222.]
[Pilcher, F. (2020) Minor Planet Bull. 47, 133-135.]
geometric albedo albedo 0.082   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.665   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=7.07, mean=12.75, max.=18.61) deg.
U-B UB 0.300   0.016 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=7.07, mean=12.75, max.=18.61) 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 B   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)

47 Aglaja (A857 RA)          Discovered 1857-Sep-15 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A857 RA = 1948 EU = 1982 DX2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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