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84 Klio (A865 QA)
Classification: Main-belt Asteroid          SPK-ID: 2000084
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 90 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2364473077018875 2.8799e-08  
a 2.362184859573768 2.0318e-09 au
q 1.803652609233389 6.7845e-08 au
i 9.317633232639398 5.5872e-07 deg
node 327.5151349298932 1.4053e-06 deg
peri 15.11052439611951 1.4475e-06 deg
M 323.4895302535153 2.5384e-06 deg
tp 2459530.988196320200
(2021-Nov-12.48819632)
9.4367e-06 TDB
period 1326.078547097675
3.63
1.7109e-06
4.684e-09
d
yr
n .2714771314172263 3.5026e-10 deg/d
Q 2.920717109914146 2.5122e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3094  
   data-arc span      56902 days (155.79 yr)  
   first obs. used      1865-08-25  
   last obs. used      2021-06-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43738  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 10:31:00  

Additional Information
 Earth MOID = .79609 au 
 Jupiter MOID = 2.48944 au 
 T_jup = 3.495 
[ 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 9.37   n/a MPCxxxxx IRAS observations used: 12
diameter diameter 79.16 km 1.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
rotation period rot_per 23.562 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2008) Minor Planet Bull. 35, 71-72.]
geometric albedo albedo 0.0527   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12
B-V BV 0.733   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=13.17, mean=18.01, max.=26.13) deg.
U-B UB 0.445   0.049 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=13.17, mean=13.95, max.=14.74) deg.
Tholen spectral type spec_T G   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

84 Klio (A865 QA)          Discovered 1865-Aug-25 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A865 QA = 1974 VJ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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