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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.


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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

[ hide close-approach data ]
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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