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5139 Rumoi (1990 VH4)
Classification: Main-belt Asteroid          SPK-ID: 2005139
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03154195577641278 3.0562e-08  
a 2.855188749373744 1.222e-08 au
q 2.765130512107686 8.5372e-08 au
i 2.850063182435251 3.5733e-06 deg
node 57.04053471932638 6.6326e-05 deg
peri 225.6377477893356 8.915e-05 deg
M 169.0376369799431 6.0444e-05 deg
tp 2458173.069406405630
0.00029591 TDB
period 1762.181600594176
n .2042922249776155 1.3116e-09 deg/d
Q 2.945246986639802 1.2606e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2936  
   data-arc span      23179 days (63.46 yr)  
   first obs. used      1956-10-29  
   last obs. used      2020-04-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43678  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:17:01  

Additional Information
 Earth MOID = 1.74965 au 
 Jupiter MOID = 2.08443 au 
 T_jup = 3.301 
[ 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 12.0   n/a MPO332867  
diameter diameter 11.956 km 0.280 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 3.257 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Cooney, Jr.; W.R.; Gross, J.; Terrell, D.; Reddy, V.; Dyvig, R. (2007) Minor Planet Bull. 34, 47-48.]
geometric albedo albedo 0.409   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

5139 Rumoi (1990 VH4)          Discovered 1990-Nov-13 by Mukai and Takeishi at Kagoshima
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
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
1934-Jul-08 14:28 00:02 Europ 0.0481777253485371 0.0481722382056093 0.0481832138955365 3.04072920495692 3.0407291324052 2427627.103048006 2.16020239748027 495.841908615361 37.6612046649991 56.7877181613068 160122.389550068 T 38 CATAB v2.0f-lin.ifort 2020-May-20 02:17:19 2020-May-20 02:17

Alternate Designations
 1990 VH4 = 1956 UM = 1959 JH = 1973 FG2 = 1989 QK1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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