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57 Mnemosyne
Classification: Main-belt Asteroid          SPK-ID: 2000057
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1142375038051154 4.8984e-08  
a 3.152718888209736 9.2177e-09 au
q 2.792560152221417 1.5512e-07 au
i 15.21447403453394 5.82e-06 deg
node 199.204385245581 1.9928e-05 deg
peri 211.0212179061414 2.7805e-05 deg
M 291.4549695729335 2.176e-05 deg
tp 2457789.813776890680
(2017-Feb-05.31377689)
0.00012432 JED
period 2044.684476867668
5.60
8.9671e-06
2.455e-08
d
yr
n .1760662850786142 7.7215e-10 deg/d
Q 3.512877624198054 1.0271e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1737  
   data-arc span      56962 days (155.95 yr)  
   first obs. used      1859-12-22  
   last obs. used      2015-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52288  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:30:47  

Additional Information
 Earth MOID = 1.81061 au 
 Jupiter MOID = 1.95285 au 
 T_jup = 3.143 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.03 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
diameter diameter 112.59 km 2.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
rotation period rot_per 12.463 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Harris, A.W.; Young, J.W.; Dockweiler, T.; Gibson, J.; et al. (1992) Icarus 95, 115-147.]
[Ditteon, R.; Hawkins, S. (2007) Minor Planet Bul. 34, 59-64.]
geometric albedo albedo 0.2149   0.011 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
B-V BV .817 mag .011 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=12.12, mean=12.51, max.=12.91) deg.
U-B UB .410 mag .029 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=12.12, mean=12.51, max.=12.91) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B S   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)

57 Mnemosyne          Discovered 1859-Sep-22 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1959 NT 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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