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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 | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 87 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2363237548554814 3.0205e-08  
a 2.361638013617915 2.1216e-09 au
q 1.803526850630289 7.1021e-08 au
i 9.317586102733404 5.6115e-07 deg
node 327.5157657423984 1.4096e-06 deg
peri 15.15246355157275 1.4532e-06 deg
M 270.218627936198 2.5795e-06 deg
tp 2459531.099475576683
(2021-Nov-12.59947558)
9.7357e-06 TDB
period 1325.618092838108
3.63
1.7863e-06
4.891e-09
d
yr
n .2715714291657342 3.6594e-10 deg/d
Q 2.919749176605541 2.6229e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2951  
   data-arc span      56788 days (155.48 yr)  
   first obs. used      1865-08-25  
   last obs. used      2021-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44178  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:15:58  

Additional Information
 Earth MOID = .79494 au 
 Jupiter MOID = 2.49059 au 
 T_jup = 3.495 
[ 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 9.38   n/a E2021B10 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

[ show close-approach data ]
Alternate Designations
 A865 QA = 1974 VJ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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