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40 Harmonia
Classification: Main-belt Asteroid          SPK-ID: 2000040
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 104 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04652373273776277 2.671e-08  
a 2.267393624150042 2.2422e-09 au
q 2.161906009168778 6.0496e-08 au
i 4.257260705693131 2.8025e-06 deg
node 94.2353155607845 4.2445e-05 deg
peri 268.899171945326 5.1394e-05 deg
M 121.9430147739322 2.9617e-05 deg
tp 2456978.081202890944
(2014-Nov-16.58120289)
0.00010248 JED
period 1247.064190115205
3.41
1.8498e-06
5.064e-09
d
yr
n .2886780029877554 4.2821e-10 deg/d
Q 2.372881239131306 2.3465e-09 au
  Orbit Determination Parameters
   # obs. used (total)      4734  
   data-arc span      55231 days (151.21 yr)  
   first obs. used      1864-09-27  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .44734  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:30:42  

Additional Information
 Earth MOID = 1.16156 au 
 Jupiter MOID = 2.79512 au 
 T_jup = 3.610 
[ 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 7.00 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
diameter diameter 107.62 km 6.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
rotation period rot_per 8.910 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Gehrels, T.; Owings, D. (1962) Astrophys. J. 135, 906-924.]
[Lagerkvist, C.-I. (1978) Astron. Astrophys. Suppl. Ser. 31, 361-381.]
[Gallardo, T.; Tancredi, G. (1987) Rev. Mexicana Astron. Astrof. 15, 103-105.]
[Tancredi, G.; Gallardo, T. (1987) Bol. Asoc. Argent. Astron. 33, 361-368.]
[Michalowski, T. (1993) Icarus 106, 563-572.]
[Armstrong, J.C.; Nellermoe, B.L.; Reitzler, L.E. (1996) I.A.P.P.P. Comm. 63, 59-68.]
[Lopez-Gonzalez, M.J.; Rodriguez, E. (1999) Astron. Astrophys. Suppl. Ser. 139, 565-574.]
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Alton, K.B. (2009) Minor Planet Bul. 36, 86.]
[Pilcher, F. (2009) Minor Planet Bul. 36, 133-136.]
[Pilcher, F. (2010) Minor Planet Bul. 37, 167.]
[Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2015) Astron. Astrophys., in press.arXiv:1510.07422]
geometric albedo albedo 0.2418   0.031 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 21
B-V BV .854 mag .026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=10; phase (min.=3.66, mean=13.95, max.=26.56) deg.
U-B UB .432 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=10; phase (min.=3.66, mean=13.95, max.=26.56) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
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)

40 Harmonia          Discovered 1856-Mar-31 by Goldschmidt, H. at Paris
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1950 XU 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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