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4816 Connelly (1981 PK)
Classification: Main-belt Asteroid          SPK-ID: 2004816
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2723866015340664 1.0373e-08  
a 2.590299812690633 8.6019e-09 au
q 1.884736849757503 2.6659e-08 au
i 11.8307900570132 9.8898e-07 deg
node 274.5384025477703 4.6365e-06 deg
peri 84.42064963073545 8.1446e-06 deg
M 138.4224484674732 5.3372e-06 deg
tp 2458614.999184571103
(2019-May-11.49918457)
2.0998e-05 TDB
period 1522.732012675912
4.17
7.5851e-06
2.077e-08
d
yr
n .2364171745278859 1.1777e-09 deg/d
Q 3.295862775623764 1.0945e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2175  
   data-arc span      14477 days (39.64 yr)  
   first obs. used      1981-08-03  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:52:46  

Additional Information
 Earth MOID = .923125 au 
 Jupiter MOID = 2.34959 au 
 T_jup = 3.338 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457100.5 (2015-Mar-19.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2742974635142087 1.0568e-08  
q 1.878639846496264 2.73e-08 au
tp 2457090.245285833181
(2015-Mar-08.74528583)
1.7823e-05 TDB
node 274.819792592723 4.6334e-06 deg
peri 83.74820815343692 8.0477e-06 deg
i 11.82114348896992 9.922e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2175  
   data-arc span      14477 days (39.64 yr)  
   first obs. used      1981-08-03  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:52:46  

Additional Information
 Jupiter MOID = 2.34959 au 
 T_jup = 3.338 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.116722666696692E-16 -2.810664220228115E-16 -1.404332725590888E-13 2.317095478470221E-14 -6.412424317541559E-14 4.464565688497785E-15
q -2.810664220228115E-16 7.453165672556397E-16 3.83852001073677E-13 -6.174551514271725E-14 1.735139906355471E-13 -1.159788661744638E-14
tp -1.404332725590888E-13 3.83852001073677E-13 3.176450570392819E-10 -3.233112371134907E-11 1.220053968339338E-10 -2.997002525290245E-12
node 2.317095478470221E-14 -6.174551514271725E-14 -3.233112371134907E-11 2.146817863312747E-11 -3.019456722932358E-11 4.270036889235895E-12
peri -6.412424317541559E-14 1.735139906355471E-13 1.220053968339338E-10 -3.019456722932358E-11 6.476565846187797E-11 -5.180027997685229E-12
i 4.464565688497785E-15 -1.159788661744638E-14 -2.997002525290245E-12 4.270036889235895E-12 -5.180027997685229E-12 9.844660144238556E-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 12.84   n/a MPCxxxxx  
diameter diameter 7.161 km 0.209 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.8978 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.286   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4816 Connelly (1981 PK)          Discovered 1981-Aug-03 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 PK = 1987 BT1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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