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137 Meliboea (A874 HA)
Classification: Main-belt Asteroid          SPK-ID: 2000137
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 105 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2118960234528736 3.1952e-08  
a 3.124649917141248 8.8015e-09 au
q 2.462549025016667 1.0155e-07 au
i 13.42813754078178 3.4251e-06 deg
node 202.2139395991665 1.1667e-05 deg
peri 107.36498352377 1.4032e-05 deg
M 110.5290692333317 8.6742e-06 deg
tp 2458381.095311127705
(2018-Sep-19.59531113)
4.7213e-05 TDB
period 2017.439299369232
5.52
8.5241e-06
2.334e-08
d
yr
n .1784440305651608 7.5396e-10 deg/d
Q 3.78675080926583 1.0667e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3006  
   data-arc span      49504 days (135.53 yr)  
   first obs. used      1885-04-18  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43045  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:32:59  

Additional Information
 Earth MOID = 1.48996 au 
 Jupiter MOID = 1.81111 au 
 T_jup = 3.139 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454684.5 (2008-Aug-06.0) TDB
Reference: JPL 105 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2188660323259481 3.2049e-08  
q 2.434109400331804 1.0245e-07 au
tp 2454352.495862501595
(2007-Sep-08.99586250)
3.9638e-05 TDB
node 202.4153304916803 1.1714e-05 deg
peri 106.8230958786904 1.3871e-05 deg
i 13.41495872816951 3.4253e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3006  
   data-arc span      49504 days (135.53 yr)  
   first obs. used      1885-04-18  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43045  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:32:59  

Additional Information
 Jupiter MOID = 1.81111 au 
 T_jup = 3.139 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.027124366449588E-15 -3.276388637140519E-15 2.235513823143437E-13 -2.205362408257601E-15 -3.424735499577521E-15 -3.456437681182498E-16
q -3.276388637140519E-15 1.049549344419358E-14 -6.663587332805467E-13 7.492587693311697E-15 1.863083197541736E-14 1.714899262402367E-15
tp 2.235513823143437E-13 -6.663587332805467E-13 1.571189259181643E-9 2.257681470411611E-12 2.960311415628956E-10 -6.010949406956728E-13
node -2.205362408257601E-15 7.492587693311697E-15 2.257681470411611E-12 1.372257746614958E-10 -1.329074433234761E-10 -1.507790744976024E-12
peri -3.424735499577521E-15 1.863083197541736E-14 2.960311415628956E-10 -1.329074433234761E-10 1.924142680222803E-10 1.335657274716576E-12
i -3.456437681182498E-16 1.714899262402367E-15 -6.010949406956728E-13 -1.507790744976024E-12 1.335657274716576E-12 1.173253191487409E-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 8.1   n/a MPO502154 IRAS observations used: 11
diameter diameter 128.678 km 0.533 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 25.676 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pilcher, F.; Jardine, D. (2009) Minor Planet Bull. 36, 52-54.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.065   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.689   0.031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=7.19, mean=11.61, max.=17.67) deg.
U-B UB 0.326   0.041 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=7.19, mean=11.08, max.=17.67) 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

137 Meliboea (A874 HA)          Discovered 1874-Apr-21 by Palisa, J. at Pola
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A874 HA = 1958 UE = 1962 GB = A923 FA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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