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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1403889837622518 3.6773e-08  
a 2.315476395953156 8.5316e-09 au
q 1.990409017799811 8.5646e-08 au
i 7.876288410734043 4.8916e-06 deg
node 27.32034844714977 2.6941e-05 deg
peri 304.2150136906656 3.1844e-05 deg
M 53.33390532164469 1.798e-05 deg
tp 2458809.839885747361
(2019-Nov-22.33988575)
6.4078e-05 TDB
period 1286.941969034744
3.52
7.1128e-06
1.947e-08
d
yr
n .279732892905819 1.5461e-09 deg/d
Q 2.640543774106501 9.7293e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2429  
   data-arc span      9135 days (25.01 yr)  
   first obs. used      1995-11-12  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40558  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:49:12  

Additional Information
 Earth MOID = .993177 au 
 Jupiter MOID = 2.72876 au 
 T_jup = 3.556 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456576.5 (2013-Oct-11.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1399062384466415 3.666e-08  
q 1.992436175205488 8.5321e-08 au
tp 2456235.589628263540
(2012-Nov-04.08962826)
6.3718e-05 TDB
node 27.44598966939305 2.6919e-05 deg
peri 304.2115550785817 3.1898e-05 deg
i 7.878862525780212 4.8926e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2429  
   data-arc span      9135 days (25.01 yr)  
   first obs. used      1995-11-12  
   last obs. used      2020-11-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40558  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:49:12  

Additional Information
 Jupiter MOID = 2.72876 au 
 T_jup = 3.556 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.343988971926358E-15 -3.116180185334086E-15 6.96014013359526E-13 1.989312447497983E-15 1.663340507416093E-13 9.698359594049655E-16
q -3.116180185334086E-15 7.279707556516787E-15 -1.633857619212743E-12 -4.071177840796182E-15 -3.880829791247873E-13 -2.281390990058149E-15
tp 6.96014013359526E-13 -1.633857619212743E-12 4.060004437796044E-9 -3.579547627388995E-12 1.099825226421411E-9 -1.117029730439542E-13
node 1.989312447497983E-15 -4.071177840796182E-15 -3.579547627388995E-12 7.246312691592035E-10 -7.181078575594258E-10 3.51745776396775E-12
peri 1.663340507416093E-13 -3.880829791247873E-13 1.099825226421411E-9 -7.181078575594258E-10 1.017453940270679E-9 -3.525805475806492E-12
i 9.698359594049655E-16 -2.281390990058149E-15 -1.117029730439542E-13 3.51745776396775E-12 -3.525805475806492E-12 2.393734170340251E-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 14.1   n/a MPO395122  
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 32 CATAB v2.0f-lin.ifort 2020-Dec-18 02:49:18 2020-Dec-18 02:49
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 32 CATAB v2.0f-lin.ifort 2020-Dec-18 02:49:18 2020-Dec-18 02:49
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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