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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


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 
[ 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. 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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1955-Mar-14 17:46 < 00:01 Jupiter 1.82982380277887 1.82982329701832 1.82982430853945 0.778719446785339 n/a 2435181.240539399 0.970976436753211 141.180167072454 25.1346052997388 -89.1435725167115 10886840.3251669 F 105 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:07 2020-Nov-13 04:33
1965-Feb-25 05:04 < 00:01 Jupiter 1.87739201968746 1.8773916368706 1.87739240250442 4.22749205996048 4.11938704027546 2438816.711065216 0.528716667280636 66.9601218044262 15.7283308029698 -85.4804448633679 3328706.45832053 T 105 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:07 2020-Nov-13 04:33
2027-Jun-18 11:23 < 00:01 Jupiter 1.88070143497766 1.88070100807701 1.88070186187821 2.46818499499643 2.27841731483845 2461574.974493309 0.372183111506935 55.7364711028648 21.1121005330714 -88.2208156122324 2220562.86717175 T 105 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:07 2020-Nov-13 04:33
2037-Mar-30 18:49 < 00:01 Jupiter 1.82430608609272 1.82430563755113 1.82430653463421 2.46627494324406 2.27022359367839 2465148.283735959 0.54815813453532 75.7181810472015 24.6298122245101 -87.5033907282553 1921184.8620976 T 105 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:07 2020-Nov-13 04:33
2099-Jul-08 12:14 00:01 Jupiter 1.99170865202129 1.99170806907153 1.99170923497275 3.78592051789183 3.67187221383361 2487893.009393250 1.1655694963494 125.734856436288 15.5326020869402 -81.6441622314164 3369132.00886288 T 105 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:07 2020-Nov-13 04:33
2109-Jul-23 01:16 00:02 Jupiter 1.82854568687704 1.82854518195575 1.82854619179841 0.945021426971336 n/a 2491559.552766361 1.85110335936633 72.4108639348698 24.3246852613659 -84.5304952454767 11197278.034934 F 105 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:07 2020-Nov-13 04:33
2119-Jun-12 06:30 00:02 Jupiter 1.90900703665928 1.90900648528258 1.90900758803838 4.12187685808239 4.01278867195228 2495170.770817055 1.54473981635702 150.819529563054 15.832077239458 -84.8121819937087 2891089.4766774 T 105 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:07 2020-Nov-13 04:33
2181-Oct-07 06:46 00:02 Jupiter 1.85354512444068 1.85354454512287 1.85354570376334 2.75268609769589 2.58134308452489 2517933.781833541 2.43862363161217 240.195365068773 18.1797187683524 86.8992314404407 2131242.78626185 T 105 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:07 2020-Nov-13 04:33
2191-Jul-30 02:28 00:03 Jupiter 1.85772758752777 1.85772709409834 1.85772808095658 2.0775397129874 1.84506917983161 2521516.602587558 3.0598230625092 167.854497504062 85.9922464007556 2.0363421346462 458136.213554333 T 105 CATAB v2.0f-lin.ifort 2020-Nov-13 04:33:07 2020-Nov-13 04:33

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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