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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2363237557779413 3.0148e-08  
a 2.361638012752183 2.087e-09 au
q 1.803526847790634 7.0886e-08 au
i 9.317586089263054 5.61e-07 deg
node 327.5157657366094 1.4094e-06 deg
peri 15.15246346518853 1.4524e-06 deg
M 270.2186282994173 2.5711e-06 deg
tp 2459531.099474057423
(2021-Nov-12.59947406)
9.6995e-06 TDB
period 1325.618092109188
3.63
1.7572e-06
4.811e-09
d
yr
n .2715714293150637 3.5998e-10 deg/d
Q 2.919749177713733 2.5802e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2971  
   data-arc span      56822 days (155.57 yr)  
   first obs. used      1865-08-25  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44472  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:49:56  

Additional Information
 Earth MOID = .79494 au 
 Jupiter MOID = 2.49059 au 
 T_jup = 3.495 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456965.5 (2014-Nov-04.0) TDB
Reference: JPL 88 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2365552977457319 3.0279e-08  
q 1.803083360029316 7.1254e-08 au
tp 2456876.728043044456
(2014-Aug-07.22804304)
8.2598e-06 TDB
node 327.597575863762 1.4044e-06 deg
peri 14.64315593840626 1.45e-06 deg
i 9.331140668533752 5.6064e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2971  
   data-arc span      56822 days (155.57 yr)  
   first obs. used      1865-08-25  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44472  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 17:49:56  

Additional Information
 Jupiter MOID = 2.49059 au 
 T_jup = 3.495 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.168403045360449E-16 -2.157006590799427E-15 1.763671328560919E-13 -9.264957292592753E-15 1.309318514341045E-14 -6.569619656437184E-15
q -2.157006590799427E-15 5.077125754491971E-15 -4.139046282707295E-13 2.178005417557996E-14 -3.042277811138275E-14 1.550315925516215E-14
tp 1.763671328560919E-13 -4.139046282707295E-13 6.822481600788538E-11 2.3484284896501E-12 8.393706561826828E-12 5.496374290061033E-13
node -9.264957292592753E-15 2.178005417557996E-14 2.3484284896501E-12 1.972459085234673E-12 -2.989614186063859E-13 2.738036158959576E-13
peri 1.309318514341045E-14 -3.042277811138275E-14 8.393706561826828E-12 -2.989614186063859E-13 2.102533746583228E-12 8.711118255940113E-14
i -6.569619656437184E-15 1.550315925516215E-14 5.496374290061033E-13 2.738036158959576E-13 8.711118255940113E-14 3.143222733073375E-13

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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