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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 131 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .19954874009544 1.5675e-08  
a 2.595080220030482 4.5852e-09 au
q 2.077235231676802 4.1108e-08 au
i 14.09473918846703 9.6769e-07 deg
node 92.5575641734055 3.0146e-06 deg
peri 120.7342623781598 6.337e-06 deg
M 104.8024735639086 4.1048e-06 deg
tp 2458951.977610360580
(2020-Apr-12.47761036)
1.7346e-05 TDB
period 1526.949267782368
4.18
4.0469e-06
1.108e-08
d
yr
n .2357642179709339 6.2486e-10 deg/d
Q 3.112925208384162 5.5002e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3101  
   data-arc span      44631 days (122.19 yr)  
   first obs. used      1899-05-30  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38021  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:34:49  

Additional Information
 Earth MOID = 1.10723 au 
 Jupiter MOID = 1.99324 au 
 T_jup = 3.347 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457419.5 (2016-Feb-01.0) TDB
Reference: JPL 131 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1989356097069021 1.5619e-08  
q 2.077851763751692 4.0693e-08 au
tp 2457424.227534929023
(2016-Feb-05.72753493)
1.7658e-05 TDB
node 92.61402021434887 3.0118e-06 deg
peri 120.3657015214596 6.3895e-06 deg
i 14.10416797363703 9.6848e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3101  
   data-arc span      44631 days (122.19 yr)  
   first obs. used      1899-05-30  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38021  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:34:49  

Additional Information
 Jupiter MOID = 1.99324 au 
 T_jup = 3.347 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.439636122092178E-16 -6.331617397138136E-16 2.108727899310893E-13 2.130057886652716E-15 5.962980515505383E-14 -9.781474226810511E-16
q -6.331617397138136E-16 1.655914091666245E-15 -5.554701224200051E-13 -5.647957598651576E-15 -1.575684023380353E-13 2.438736814483332E-15
tp 2.108727899310893E-13 -5.554701224200051E-13 3.11801441130247E-10 -9.712611122989132E-12 1.009879459040562E-10 -8.863402773886436E-13
node 2.130057886652716E-15 -5.647957598651576E-15 -9.712611122989132E-12 9.0709499599711E-12 -1.123994983957941E-11 -1.87200696256083E-12
peri 5.962980515505383E-14 -1.575684023380353E-13 1.009879459040562E-10 -1.123994983957941E-11 4.082542078767273E-11 1.791280282184671E-12
i -9.781474226810511E-16 2.438736814483332E-15 -8.863402773886436E-13 -1.87200696256083E-12 1.791280282184671E-12 9.379551376618822E-13

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 9.23   n/a E2021B10 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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