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725 Amanda (A911 UQ)
Classification: Main-belt Asteroid          SPK-ID: 2000725
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .221597881561724 3.2471e-08  
a 2.572196946014091 7.0306e-09 au
q 2.002203551817832 8.5396e-08 au
i 3.79015971067138 2.8145e-06 deg
node 68.67918531943486 5.6314e-05 deg
peri 323.35554167 5.6779e-05 deg
M 114.5145762472995 8.3615e-06 deg
tp 2458521.193825328672
(2019-Feb-06.69382533)
3.3901e-05 TDB
period 1506.797025638448
4.13
6.1778e-06
1.691e-08
d
yr
n .2389173816211003 9.7955e-10 deg/d
Q 3.14219034021035 8.5885e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3261  
   data-arc span      38272 days (104.78 yr)  
   first obs. used      1915-09-29  
   last obs. used      2020-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41695  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:26:29  

Additional Information
 Earth MOID = 1.00983 au 
 Jupiter MOID = 2.29785 au 
 T_jup = 3.391 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456781.5 (2014-May-04.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2193997621963289 3.2366e-08  
q 2.009053863367626 8.4995e-08 au
tp 2457010.604149527891
(2014-Dec-19.10414953)
3.1768e-05 TDB
node 68.81930388954375 5.6413e-05 deg
peri 322.74697269575 5.6894e-05 deg
i 3.78656445994129 2.809e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3261  
   data-arc span      38272 days (104.78 yr)  
   first obs. used      1915-09-29  
   last obs. used      2020-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41695  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:26:29  

Additional Information
 Jupiter MOID = 2.29785 au 
 T_jup = 3.391 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.04758976082703E-15 -2.745754758503008E-15 -4.209747079640736E-13 -4.684747437276357E-15 -1.210491638889329E-13 -2.637072443894152E-16
q -2.745754758503008E-15 7.224074303200013E-15 1.152247806718355E-12 1.355366016692622E-14 3.252844683441448E-13 7.298666453015465E-16
tp -4.209747079640736E-13 1.152247806718355E-12 1.009177250862058E-9 4.929239480077745E-12 2.5230330915155E-10 1.026728632475935E-13
node -4.684747437276357E-15 1.355366016692622E-14 4.929239480077745E-12 3.182386142432875E-9 -3.173933725566811E-9 -2.550569084847622E-11
peri -1.210491638889329E-13 3.252844683441448E-13 2.5230330915155E-10 -3.173933725566811E-9 3.236972218713669E-9 2.547293642716068E-11
i -2.637072443894152E-16 7.298666453015465E-16 1.026728632475935E-13 -2.550569084847622E-11 2.547293642716068E-11 7.890461321147508E-12

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 11.8   n/a MPO502160 IRAS observations used: 3
diameter diameter 23.687 km 0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.749 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Di Martino, M.; Dotto, E.; Barucci, M.A.; Fulchignoni, M.; Rotundi, A. (1994) Icarus 109, 210-218.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.068   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.738   0.046 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=20.36 deg.
U-B UB 0.417   0.070 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=20.36 deg.
Tholen spectral type spec_T CSU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

725 Amanda (A911 UQ)          Discovered 1911-Oct-21 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A911 UQ = 2016 FH6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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