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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 ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 106 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2118960235706613 3.1947e-08  
a 3.124649917068062 8.7941e-09 au
q 2.462549024590943 1.0153e-07 au
i 13.42813746964269 3.4173e-06 deg
node 202.2139396443561 1.1666e-05 deg
peri 107.3649835946836 1.4024e-05 deg
M 110.5290691823083 8.6714e-06 deg
tp 2458381.095311435402
(2018-Sep-19.59531144)		 4.7194e-05 TDB
period 2017.439299298353
5.52		 8.5169e-06
2.332e-08		 d
yr
n .1784440305714302 7.5333e-10 deg/d
Q 3.786750809545181 1.0658e-08 au
   Orbit Determination Parameters
   # obs. used (total)      3029  
   data-arc span      49511 days (135.55 yr)  
   first obs. used      1885-04-18  
   last obs. used      2020-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4292  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:51:14  

Additional Information
 Earth MOID = 1.48996 au 
 Jupiter MOID = 1.81111 au 
 T_jup = 3.139 
[ show covariance matrix ]

[ 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. 2020-October); 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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