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12425 (1995 VG2)
Classification: Main-belt Asteroid          SPK-ID: 2012425
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1404121808318202 3.4144e-08  
a 2.315933420543883 7.8364e-09 au
q 1.990748158304019 7.8446e-08 au
i 7.875636488855407 4.1136e-06 deg
node 27.31624229595006 2.6658e-05 deg
peri 304.295960231229 3.0985e-05 deg
M 109.1923401037157 1.7577e-05 deg
tp 2458810.039411516664
(2019-Nov-22.53941152)
6.2236e-05 TDB
period 1287.323009292458
3.52
6.5339e-06
1.789e-08
d
yr
n .2796500935673202 1.4194e-09 deg/d
Q 2.641118682783746 8.9368e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2650  
   data-arc span      9254 days (25.34 yr)  
   first obs. used      1995-11-12  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39659  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:21:05  

Additional Information
 Earth MOID = .991652 au 
 Jupiter MOID = 2.72823 au 
 T_jup = 3.555 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456930.5 (2014-Sep-30.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1406969956443516 3.409e-08  
q 1.989975387993917 7.8301e-08 au
tp 2457523.940839258472
(2016-May-15.44083926)
6.0585e-05 TDB
node 27.35716601676346 2.6637e-05 deg
peri 304.4583002260612 3.0963e-05 deg
i 7.87947627617555 4.115e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2650  
   data-arc span      9254 days (25.34 yr)  
   first obs. used      1995-11-12  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39659  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:21:05  

Additional Information
 Jupiter MOID = 2.72823 au 
 T_jup = 3.555 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.162134886425106E-15 -2.659553318169814E-15 4.443952946466511E-13 9.322402099680491E-16 8.224309337389897E-14 1.052160743890559E-15
q -2.659553318169814E-15 6.131017001210946E-15 -9.559378080964339E-13 -1.944048729858797E-15 -1.77736856685024E-13 -2.412453441668882E-15
tp 4.443952946466511E-13 -9.559378080964339E-13 3.670532391116804E-9 -1.275270738334756E-12 9.655582264262186E-10 -2.688370472683532E-12
node 9.322402099680491E-16 -1.944048729858797E-15 -1.275270738334756E-12 7.095462538156731E-10 -7.026480141690767E-10 1.303961455539937E-11
peri 8.224309337389897E-14 -1.77736856685024E-13 9.655582264262186E-10 -7.026480141690767E-10 9.58714083130365E-10 -1.362798260601819E-11
i 1.052160743890559E-15 -2.412453441668882E-15 -2.688370472683532E-12 1.303961455539937E-11 -1.362798260601819E-11 1.693335368649526E-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 14.20   n/a E2021B10  
diameter diameter 4.730 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.32227 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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.198   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12425 (1995 VG2)          Discovered 1995-Nov-12 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 19991123/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
2097-Jun-25 05:04 < 00:01 Hebe 0.0349543072071596 0.0349400026876202 0.0349686128234548 8.09278512462449 8.09278510264798 2487149.711058744 0.810486550245838 777.253837672271 25.4857129228168 -23.4314939031206 81806.2388214762 T 35 CATAB v2.0f-lin.ifort 2021-Apr-12 23:21:25 2021-Apr-12 23:21
2126-Jul-20 15:18 00:05 Amphi 0.0369727358770827 0.0369575045346156 0.0369879681996315 2.59759870979248 2.59759864993487 2497766.137696682 5.42689423420654 815.497928616965 35.0638720276703 21.5761544437601 58276.5372243387 T 35 CATAB v2.0f-lin.ifort 2021-Apr-12 23:21:25 2021-Apr-12 23:21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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