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120578 (1995 QV12)
Classification: Main-belt Asteroid          SPK-ID: 2120578
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2579385822204746 5.4972e-08  
a 2.723530444128476 1.5468e-08 au
q 2.021026862735678 1.4564e-07 au
i 8.271752514429103 6.5697e-06 deg
node 340.3914279917391 3.2662e-05 deg
peri 63.7561895460784 3.6206e-05 deg
M 197.8313923877703 1.295e-05 deg
tp 2459940.038972153407
(2022-Dec-26.53897215)
6.2242e-05 TDB
period 1641.71126517799
4.49
1.3986e-05
3.829e-08
d
yr
n .2192833829162827 1.8681e-09 deg/d
Q 3.426034025521275 1.9458e-08 au
  Orbit Determination Parameters
   # obs. used (total)      466  
   data-arc span      9021 days (24.70 yr)  
   first obs. used      1995-08-17  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50033  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:38:37  

Additional Information
 Earth MOID = 1.04438 au 
 Jupiter MOID = 2.09218 au 
 T_jup = 3.294 
[ 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 16.13   n/a E2021B55  
diameter diameter 3.899 km 0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 72.4 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:
[Warner, B.D. (2014) Minor Planet Bull. 41, 102-112.]
geometric albedo albedo 0.042   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120578 (1995 QV12)          Discovered 1995-Aug-22 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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Alternate Designations
 1995 QV12 = 2004 QF7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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