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404 Arsinoe (A895 MA)
Classification: Main-belt Asteroid          SPK-ID: 2000404
[ 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 124 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1985927490783884 2.9915e-08  
a 2.5937893877523 4.9219e-09 au
q 2.078681622708221 7.7515e-08 au
i 14.10528622226007 3.5564e-06 deg
node 92.59443372439983 1.4422e-05 deg
peri 120.6487135269531 1.6824e-05 deg
M 11.5490055228042 8.8355e-06 deg
tp 2458951.551140338910
(2020-Apr-12.05114034)		 3.7422e-05 TDB
period 1525.810117866653
4.18		 4.343e-06
1.189e-08		 d
yr
n .2359402364583494 6.7157e-10 deg/d
Q 3.108897152796379 5.8993e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2913  
   data-arc span      44356 days (121.44 yr)  
   first obs. used      1899-05-30  
   last obs. used      2020-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38625  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:53:22  

Additional Information
 Earth MOID = 1.10829 au 
 Jupiter MOID = 1.99945 au 
 T_jup = 3.348 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455544.5 (2010-Dec-14.0) TDB
Reference: JPL 124 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1994890957651241 2.9804e-08  
q 2.075864232579816 7.7268e-08 au
tp 2455900.604681755766
(2011-Dec-05.10468176)		 3.6625e-05 TDB
node 92.65023190664949 1.4414e-05 deg
peri 120.8207115600423 1.6804e-05 deg
i 14.11171384479693 3.5579e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2913  
   data-arc span      44356 days (121.44 yr)  
   first obs. used      1899-05-30  
   last obs. used      2020-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38625  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:53:22  

Additional Information
 Jupiter MOID = 1.99945 au 
 T_jup = 3.348 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.882963122010514E-16 -2.299853327960396E-15 -4.879706976007305E-14 -5.586330441078244E-15 -1.535362030807347E-14 -1.303537330653251E-15
q -2.299853327960396E-15 5.970293088922368E-15 1.161965754861554E-13 1.337436228918142E-14 3.6944626544796E-14 3.351897837879542E-15
tp -4.879706976007305E-14 1.161965754861554E-13 1.341404199929639E-9 2.693788367084122E-12 3.297648026815882E-10 -1.310182191007481E-12
node -5.586330441078244E-15 1.337436228918142E-14 2.693788367084122E-12 2.077503380081496E-10 -2.002924042892294E-10 4.578570689508968E-12
peri -1.535362030807347E-14 3.6944626544796E-14 3.297648026815882E-10 -2.002924042892294E-10 2.823671221347495E-10 -4.677817254587983E-12
i -1.303537330653251E-15 3.351897837879542E-15 -1.310182191007481E-12 4.578570689508968E-12 -4.677817254587983E-12 1.265876690686819E-11

[ 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 9.2   n/a MPO502156 IRAS observations used: 26
diameter diameter 94.970 km 0.951 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.887 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Schober, H.J. (1981) Astron. Astrophys. 100, 311-313.]
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2005) 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.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.037   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.675   0.031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=3.57, mean=8.17, max.=19.96) deg.
U-B UB 0.333   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=3.57, mean=8.17, max.=19.96) 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 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)

404 Arsinoe (A895 MA)          Discovered 1895-Jun-20 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A895 MA = 1947 XE = 1975 VB10 = A901 VC 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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