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21904 (1999 VV12)
Classification: Main-belt Asteroid          SPK-ID: 2021904
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1069242945844348 1.2561e-08  
a 3.14203376913354 2.0349e-08 au
q 2.806074024808464 4.7022e-08 au
i 21.49203595337156 5.4524e-07 deg
node 73.4182241762192 2.1448e-06 deg
peri 115.2867269179992 9.7664e-06 deg
M 196.8272423142423 1.3085e-05 deg
tp 2460318.561421842755
(2024-Jan-09.06142184)
7.9462e-05 TDB
period 2034.298595986559
5.57
1.9763e-05
5.411e-08
d
yr
n .1769651715388485 1.7192e-09 deg/d
Q 3.477993513458618 2.2525e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2306  
   data-arc span      11931 days (32.67 yr)  
   first obs. used      1988-12-06  
   last obs. used      2021-08-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3833  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:46:16  

Additional Information
 Earth MOID = 1.86865 au 
 Jupiter MOID = 1.70824 au 
 T_jup = 3.094 
[ 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 11.69   n/a E2021B10  
diameter diameter 14.847 km 3.586 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.4324 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.184   0.144 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

21904 (1999 VV12)          Discovered 1999-Nov-11 by Juels, C. W. at Fountain Hills
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ 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
1977-Sep-17 21:22 00:01 Jupiter 1.97315918367011 1.97315823245576 1.97316013489141 6.09106417995168 6.02017593722573 2443404.390326269 1.05742272097668 192.621234781222 4.52417851512604 -75.9054332144155 20247299.236532 T 40 CATAB v2.0g-lin.ifort 2021-Aug-24 22:47:40 2021-Aug-24 22:47
1988-May-25 06:00 < 00:01 Jupiter 1.7517035191371 1.75170331973403 1.75170371854048 5.39242336180582 5.30199447227511 2447306.750101295 0.757328794996714 91.6050015704087 9.17256737564814 86.9813554629429 19618034.4775869 T 40 CATAB v2.0g-lin.ifort 2021-Aug-24 22:47:40 2021-Aug-24 22:47
2072-Aug-01 14:37 00:01 Jupiter 1.95964422654232 1.9596431044318 1.95964534866588 6.04532670398586 5.97340015048674 2478056.108965295 1.46267879548578 260.934051485099 4.57312760016456 -77.704546156153 19994649.651965 T 40 CATAB v2.0g-lin.ifort 2021-Aug-24 22:47:40 2021-Aug-24 22:47
2083-Apr-10 12:42 00:02 Jupiter 1.73974353317618 1.73974305094374 1.73974401541563 5.4106408052483 5.31989673838813 2481960.029346580 1.78161501931223 194.417326748833 9.99694757627629 83.0276833847767 19271790.1133138 T 40 CATAB v2.0g-lin.ifort 2021-Aug-24 22:47:40 2021-Aug-24 22:47
2167-Jun-18 15:40 00:04 Jupiter 1.94747880476925 1.94747558300501 1.94748202663854 6.00308221260521 5.93018805325137 2512709.152808657 3.99075891039699 736.059867248136 4.56603346910344 -77.4391195786599 19851860.9614698 T 40 CATAB v2.0g-lin.ifort 2021-Aug-24 22:47:40 2021-Aug-24 22:47
2178-Feb-25 16:00 00:04 Jupiter 1.72741260606768 1.72741148250749 1.72741372967735 5.42416804345291 5.33300248210643 2516614.166848463 4.29988608210977 475.777396392517 9.90076196312854 82.8750002064777 19413209.0248489 T 40 CATAB v2.0g-lin.ifort 2021-Aug-24 22:47:40 2021-Aug-24 22:47

Alternate Designations
 1999 VV12 = 1988 XY 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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