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190691 (2001 EG3)
Classification: Main-belt Asteroid          SPK-ID: 2190691
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3066858466721722 4.7399e-08  
a 2.752966375895265 1.4112e-08 au
q 1.908670552043804 1.2925e-07 au
i 9.56474660055156 5.2425e-06 deg
node 149.257323374196 3.3053e-05 deg
peri 272.3542525300258 3.4272e-05 deg
M 183.7118729371567 1.0549e-05 deg
tp 2460017.496790407946
(2023-Mar-13.99679041)
5.348e-05 TDB
period 1668.398487448976
4.57
1.2829e-05
3.512e-08
d
yr
n .2157757890025717 1.6592e-09 deg/d
Q 3.597262199746726 1.844e-08 au
  Orbit Determination Parameters
   # obs. used (total)      640  
   data-arc span      7565 days (20.71 yr)  
   first obs. used      1999-09-04  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51166  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:08:44  

Additional Information
 Earth MOID = .949004 au 
 Jupiter MOID = 1.87723 au 
 T_jup = 3.255 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457261.5 (2015-Aug-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3068599108456039 4.7285e-08  
q 1.908351174161838 1.2884e-07 au
tp 2456681.673064000230
(2014-Jan-24.17306400)
3.823e-05 TDB
node 149.2685099315495 3.3054e-05 deg
peri 272.5713013198579 3.4271e-05 deg
i 9.564584966444961 5.2425e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      640  
   data-arc span      7565 days (20.71 yr)  
   first obs. used      1999-09-04  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51166  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:08:44  

Additional Information
 Jupiter MOID = 1.87723 au 
 T_jup = 3.255 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.235892655920079E-15 -6.075327476674086E-15 -2.05301563659769E-13 -2.694103673506099E-16 -1.192856951661356E-13 -3.971514563330978E-15
q -6.075327476674086E-15 1.660018612979911E-14 6.988017389617579E-13 4.942474666567339E-16 3.574496215446743E-13 1.181041337463253E-14
tp -2.05301563659769E-13 6.988017389617579E-13 1.461551556250393E-9 -2.78232177309768E-11 3.810348396590228E-10 -1.594589274985819E-12
node -2.694103673506099E-16 4.942474666567339E-16 -2.78232177309768E-11 1.092577955458811E-9 -1.082805058712594E-9 4.399263474772041E-11
peri -1.192856951661356E-13 3.574496215446743E-13 3.810348396590228E-10 -1.082805058712594E-9 1.174504267613602E-9 -4.339186481326183E-11
i -3.971514563330978E-15 1.181041337463253E-14 -1.594589274985819E-12 4.399263474772041E-11 -4.339186481326183E-11 2.74840263574175E-11

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 15.85   n/a E2021B55  
rotation period rot_per 159.265 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

190691 (2001 EG3)          Discovered 2001-Mar-04 by Spacewatch at Kitt Peak
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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