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187834 (1999 VM121)
Classification: Main-belt Asteroid          SPK-ID: 2187834
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1315693279973903 5.8148e-08  
a 3.150766622901536 3.4479e-08 au
q 2.736222375649774 1.8776e-07 au
i 5.182620569767989 6.4563e-06 deg
node 32.66364036251719 6.0439e-05 deg
peri 339.1289972283863 6.4146e-05 deg
M 303.8983067683558 2.434e-05 deg
tp 2459518.843692577489
(2021-Oct-31.34369258)
0.00014141 TDB
period 2042.785568961294
5.59
3.3532e-05
9.181e-08
d
yr
n .1762299506467784 2.8928e-09 deg/d
Q 3.565310870153298 3.9016e-08 au
  Orbit Determination Parameters
   # obs. used (total)      280  
   data-arc span      7170 days (19.63 yr)  
   first obs. used      1999-10-10  
   last obs. used      2019-05-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58069  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:01  

Additional Information
 Earth MOID = 1.73586 au 
 Jupiter MOID = 1.89924 au 
 T_jup = 3.188 
[ 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 15.83   n/a MPCxxxxx  
diameter diameter 3.569 km 0.443 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.4 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.066   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187834 (1999 VM121)          Discovered 1999-Nov-04 by Spacewatch at Kitt Peak
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ 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
1946-Dec-07 12:47 00:03 Jupiter 1.95957398757535 1.95957322304854 1.95957475210193 2.84765023900058 2.69158230371783 2432162.032297818 3.36132695125689 83.2110454404226 25.6300858678168 85.9664737744354 1960227.65298241 T 13 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:02 2021-Apr-13 21:57
1957-Jun-30 08:41 00:03 Jupiter 1.93488320613978 1.93488263738742 1.93488377489237 2.73088718773279 2.56558307656834 2436019.861811176 2.76789180397116 166.984643471474 17.5896313290555 88.0286927447687 2193926.66410606 T 13 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:02 2021-Apr-13 21:57
2042-Jan-17 21:01 00:01 Jupiter 1.96161484331802 1.96161431472244 1.96161537191361 2.8406745505245 2.68436859141528 2466902.375729538 1.34086434342796 75.4911822091529 13.4665383844193 81.3112426651009 2441724.89796481 T 13 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:02 2021-Apr-13 21:57
2052-Aug-09 13:51 00:02 Jupiter 1.92919197457938 1.92919140207079 1.92919254708819 2.72913380035033 2.56321285305285 2470759.076946152 1.90249474294544 119.84354591774 16.5132750733387 85.3043452161087 2176741.95851092 T 13 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:02 2021-Apr-13 21:57
2137-Mar-01 22:14 00:06 Jupiter 1.96455130656865 1.96455056886113 1.96455204427616 2.83725460628464 2.68098999875618 2501643.426066382 6.06014231141242 71.9154561017845 18.8909741872971 78.6539471234043 1874232.69964864 T 13 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:02 2021-Apr-13 21:57
2147-Sep-21 15:45 00:07 Jupiter 1.9285822957489 1.92858166603183 1.92858292547013 2.72885995295163 2.56286712046317 2505499.156101923 6.54841169533672 284.920202836893 16.7642894434887 87.4269752693392 2167948.80902965 T 13 CATAB v2.0f-lin.ifort 2021-Apr-13 21:57:02 2021-Apr-13 21:57
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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