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18916 (2000 OG44)
Classification: Outer Main-belt Asteroid          SPK-ID: 2018916
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5834260739061223 3.2429e-08  
a 3.85501034139542 1.2825e-08 au
q 1.60589679304759 1.2408e-07 au
i 7.395874669064992 8.2307e-06 deg
node 301.3739165835999 5.0733e-05 deg
peri 98.88152868670932 5.0974e-05 deg
M 231.4482002929273 4.963e-06 deg
tp 2460187.716506630482
(2023-Aug-31.21650663)
4.1759e-05 TDB
period 2764.628291449896
7.57
1.3796e-05
3.777e-08
d
yr
n .1302164204545558 6.498e-10 deg/d
Q 6.10412388974325 2.0307e-08 au
  Orbit Determination Parameters
   # obs. used (total)      631  
   data-arc span      24032 days (65.80 yr)  
   first obs. used      1954-09-06  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45718  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:42:29  

Additional Information
 Earth MOID = .63407 au 
 Jupiter MOID = .615141 au 
 T_jup = 2.736 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456582.5 (2013-Oct-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5860933926848331 3.258e-08  
q 1.592410993246408 1.2521e-07 au
tp 2457426.422872060345
(2016-Feb-07.92287206)
3.2852e-05 TDB
node 301.6943895483449 5.0617e-05 deg
peri 98.45555032635298 5.0805e-05 deg
i 7.415531177272443 8.2606e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      631  
   data-arc span      24032 days (65.80 yr)  
   first obs. used      1954-09-06  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45718  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:42:29  

Additional Information
 Jupiter MOID = .615141 au 
 T_jup = 2.736 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.061472259362668E-15 -4.076334700219575E-15 -2.785484982955604E-13 -9.0978451804693E-14 7.489565591071037E-14 -4.072260875914997E-14
q -4.076334700219575E-15 1.567872891331322E-14 1.144519295288834E-12 4.351509305467207E-13 -3.640025239147501E-13 1.807084535233037E-13
tp -2.785484982955604E-13 1.144519295288834E-12 1.079238307377604E-9 4.865606374029073E-11 1.419671700921919E-10 5.911571017024868E-11
node -9.0978451804693E-14 4.351509305467207E-13 4.865606374029073E-11 2.562038109715739E-9 -2.541265764050484E-9 1.941036725740046E-10
peri 7.489565591071037E-14 -3.640025239147501E-13 1.419671700921919E-10 -2.541265764050484E-9 2.581167284898261E-9 -1.846077280608463E-10
i -4.072260875914997E-14 1.807084535233037E-13 5.911571017024868E-11 1.941036725740046E-10 -1.846077280608463E-10 6.823711522525089E-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 14.43   n/a E2021B10  
diameter diameter 5.6 km 0.6 Fernandez et al. (2005) Astron.J. 130:308-318  
geometric albedo albedo 0.111   0.024 Fernandez et al. (2005) Astron.J. 130:308-318  

18916 (2000 OG44)          Discovered 2000-Jul-30 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 OG44 = 1977 SD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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