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4892 Chrispollas (1985 TV2)
Classification: Main-belt Asteroid          SPK-ID: 2004892
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09880543291105082 3.1195e-08  
a 2.335825270976086 6.5394e-09 au
q 2.105033043872722 7.2138e-08 au
i 8.571902290597512 3.1644e-06 deg
node 211.719153567712 2.2144e-05 deg
peri 307.9750864529335 2.7111e-05 deg
M 121.8498575729006 1.6433e-05 deg
tp 2458559.151676685572
(2019-Mar-16.65167669)		 5.9137e-05 TDB
period 1303.944046862228
3.57		 5.4758e-06
1.499e-08		 d
yr
n .2760854661411993 1.1594e-09 deg/d
Q 2.566617498079451 7.1855e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2803  
   data-arc span      21963 days (60.13 yr)  
   first obs. used      1960-09-29  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37552  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:19:48  

Additional Information
 Earth MOID = 1.12371 au 
 Jupiter MOID = 2.43692 au 
 T_jup = 3.546 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.9   n/a MPO384798  
diameter diameter 7.284 km 0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 1584. 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:
[Stephens, R.D.; Warner, B.D. (2019) Minor Planet Bull. 46, 449-456.]
geometric albedo albedo 0.282   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4892 Chrispollas (1985 TV2)          Discovered 1985-Oct-11 by CERGA at Caussols
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1985 TV2 = 1964 WE = 1978 TT9 = 1981 RY = 1989 VB2 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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