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102998 (1999 XJ94)
Classification: Main-belt Asteroid          SPK-ID: 2102998
[ 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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1854051285688963 3.2359e-08  
a 2.636542820244219 1.624e-08 au
q 2.147714259679439 8.0075e-08 au
i 13.90193366136195 4.2368e-06 deg
node 107.2165876700475 1.4144e-05 deg
peri 273.0127771395339 2.0157e-05 deg
M 37.32350468136524 1.1728e-05 deg
tp 2459038.382242736355
(2020-Jul-07.88224274)		 5.1326e-05 TDB
period 1563.690042324756
4.28		 1.4447e-05
3.955e-08		 d
yr
n .2302246546667164 2.1271e-09 deg/d
Q 3.125371380808999 1.925e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1108  
   data-arc span      7743 days (21.20 yr)  
   first obs. used      1999-12-07  
   last obs. used      2021-02-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48172  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:44:36  

Additional Information
 Earth MOID = 1.20238 au 
 Jupiter MOID = 2.48565 au 
 T_jup = 3.332 
[ 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 14.8   n/a MPO436483  
diameter diameter 3.285 km 0.663 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.198   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102998 (1999 XJ94)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)		 Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1946-Oct-24 13:29 00:02 Iris 0.0404466548589084 0.0404326620010348 0.0404606521732693 5.87562709172083 5.87562706753081 2432118.061570674 2.38490799399167 967.401760834275 34.3280098269207 43.8798584357748 122225.703052291 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:44:39 2021-Apr-13 15:44
2025-Sep-12 09:11 00:02 David 0.0488682614081263 0.0488637963257384 0.0488727265609465 2.53978082132178 2.53978069960235 2460930.882449027 2.06192599428954 242.569516818093 67.3577852600663 24.6222560532302 52755.9748369617 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:44:39 2021-Apr-13 15:44
2079-Jun-29 11:41 00:03 Iris 0.0346212088062207 0.0346072995591522 0.0346351255151975 5.84530479323291 5.84530476482602 2480578.986772452 2.68234625598638 1060.56983875829 35.073450734023 49.1926659445893 111786.846160664 T 29 CATAB v2.0f-lin.ifort 2021-Apr-13 15:44:39 2021-Apr-13 15:44
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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