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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 123 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1985927486310655 2.992e-08  
a 2.593789387783366 4.9226e-09 au
q 2.078681623893379 7.7529e-08 au
i 14.10528622807951 3.5564e-06 deg
node 92.59443344629638 1.4425e-05 deg
peri 120.6487138630364 1.6827e-05 deg
M 11.54900540277909 8.8367e-06 deg
tp 2458951.551140846740
(2020-Apr-12.05114085)
3.7427e-05 TDB
period 1525.810117894065
4.18
4.3436e-06
1.189e-08
d
yr
n .2359402364541106 6.7167e-10 deg/d
Q 3.108897151673353 5.9002e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2908  
   data-arc span      44329 days (121.37 yr)  
   first obs. used      1899-05-30  
   last obs. used      2020-10-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38411  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:29:57  

Additional Information
 Earth MOID = 1.10829 au 
 Jupiter MOID = 1.99945 au 
 T_jup = 3.348 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455541.5 (2010-Dec-11.0) TDB
Reference: JPL 123 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1994882217117266 2.9809e-08  
q 2.07585892282381 7.7281e-08 au
tp 2455900.607690019553
(2011-Dec-05.10769002)
3.6628e-05 TDB
node 92.65025134171731 1.4417e-05 deg
peri 120.8216997485802 1.6807e-05 deg
i 14.11173355251688 3.5579e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2908  
   data-arc span      44329 days (121.37 yr)  
   first obs. used      1899-05-30  
   last obs. used      2020-10-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38411  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:29:57  

Additional Information
 Jupiter MOID = 1.99945 au 
 T_jup = 3.348 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.88578022731786E-16 -2.300603489894642E-15 -4.903551013055387E-14 -5.591665607711938E-15 -1.538591545004782E-14 -1.303312720958461E-15
q -2.300603489894642E-15 5.972294180009883E-15 1.168440987576286E-13 1.338691377766194E-14 3.703294410993477E-14 3.351606389146608E-15
tp -4.903551013055387E-14 1.168440987576286E-13 1.341614612556707E-9 2.689183396267752E-12 3.29805052843972E-10 -1.310250947240673E-12
node -5.591665607711938E-15 1.338691377766194E-14 2.689183396267752E-12 2.078446919996725E-10 -2.003847866661093E-10 4.576451713454079E-12
peri -1.538591545004782E-14 3.703294410993477E-14 3.29805052843972E-10 -2.003847866661093E-10 2.824643041002771E-10 -4.67578571353565E-12
i -1.303312720958461E-15 3.351606389146608E-15 -1.310250947240673E-12 4.576451713454079E-12 -4.67578571353565E-12 1.265885631683981E-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. 2019-August); 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.]
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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