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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09880543286711278 3.1199e-08  
a 2.335825270978006 6.5446e-09 au
q 2.105033043977083 7.2152e-08 au
i 8.571902069515343 3.1713e-06 deg
node 211.7191527854664 2.2155e-05 deg
peri 307.9750872554015 2.7136e-05 deg
M 121.8498575461933 1.6449e-05 deg
tp 2458559.151676781763
(2019-Mar-16.65167678)
5.9197e-05 TDB
period 1303.944046863836
3.57
5.4802e-06
1.5e-08
d
yr
n .2760854661408588 1.1603e-09 deg/d
Q 2.566617497978929 7.1913e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2781  
   data-arc span      21945 days (60.08 yr)  
   first obs. used      1960-09-29  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37439  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:47:50  

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. 2019-August); 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. 46-4, submitted. (MBA Gaggle) http://www.planetarysciences.org/lightcurves.html]
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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