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30990 (1995 ST48)
Classification: Main-belt Asteroid          SPK-ID: 2030990
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .159624736478914 4.1198e-08  
a 2.974493215956532 1.5862e-08 au
q 2.499690520201153 1.1754e-07 au
i 2.451222387052211 3.3714e-06 deg
node 97.52774022770508 9.577e-05 deg
peri 119.5407568869928 9.6523e-05 deg
M 147.6035572603226 1.0825e-05 deg
tp 2458628.232919692571
(2019-May-24.73291969)
5.72e-05 TDB
period 1873.776987792292
5.13
1.4989e-05
4.104e-08
d
yr
n .1921253181917644 1.5368e-09 deg/d
Q 3.449295911711911 1.8394e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1245  
   data-arc span      9170 days (25.11 yr)  
   first obs. used      1995-09-26  
   last obs. used      2020-11-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58134  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:43:46  

Additional Information
 Earth MOID = 1.4942 au 
 Jupiter MOID = 1.51998 au 
 T_jup = 3.241 
[ 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 14.47   n/a E2021B10  
diameter diameter 6.993 km 0.363 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.61 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
geometric albedo albedo 0.069   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30990 (1995 ST48)          Discovered 1995-Sep-26 by Spacewatch at Kitt Peak
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ 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
1929-Nov-20 01:26 00:02 Jupiter 1.75407717939018 1.75407576493159 1.75407859384628 1.88133249694493 1.60425568952605 2425935.559406485 2.12801850048291 65.3481844906518 37.9447840242671 57.1985651295235 912003.070143163 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 06:43:49 2021-Apr-13 06:43
1938-Jun-23 18:52 00:02 Jupiter 1.98952730099964 1.98952602776896 1.98952857423055 3.06153458513535 2.91916303961973 2429073.285968874 1.92390249843396 82.1866438782058 18.8854570808795 -60.4296876730762 2213917.65628646 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 06:43:49 2021-Apr-13 06:43
1974-Dec-20 10:28 00:01 Jupiter 1.68865164328818 1.68865106702074 1.68865221955601 1.7519205065859 1.43736966875618 2442401.935908685 1.08403234849824 104.687549624235 36.6648443180335 70.7556862931438 2225487.62229631 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 06:43:49 2021-Apr-13 06:43
2011-May-29 06:41 < 00:01 Jupiter 1.52362006595439 1.52361960742889 1.52362052448405 1.12399927435544 0.389254523437414 2455710.778159137 0.209989307764755 3301.29899701341 510.612531713773 5.58137484946848 1555015.31696957 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 06:43:49 2021-Apr-13 06:43
2047-Oct-18 22:10 < 00:01 Jupiter 1.5558371777427 1.55583685428893 1.55583750119595 1.19783735046176 0.588202771566583 2469002.423927929 0.933181171034574 697.601862191684 248.853516504629 0.905229742711447 1901522.49761596 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 06:43:49 2021-Apr-13 06:43
2084-Apr-05 02:26 00:02 Jupiter 1.77793345018994 1.77793218146809 1.77793471891026 1.94133556336484 1.67808428830983 2482320.601282611 2.01327887154256 57.9104770528366 21.9790329049048 80.9222889447137 1128671.15068034 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 06:43:49 2021-Apr-13 06:43
2092-Nov-06 16:29 00:02 Jupiter 1.9681645376308 1.96816286439711 1.96816621086448 2.99472573822451 2.84739512087337 2485458.186767717 2.05858297421833 94.4259738090656 19.0321200018038 -57.5856072775504 1895912.75208855 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 06:43:49 2021-Apr-13 06:43
2129-May-03 16:32 00:03 Jupiter 1.67589210733467 1.67589020524235 1.67589400943547 1.71261565290348 1.38644169817857 2498784.188877183 3.00518117766289 342.898628980498 36.0453729713007 60.5888958444195 2240207.21198738 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 06:43:49 2021-Apr-13 06:43
2165-Oct-08 06:04 00:04 Jupiter 1.52905956320589 1.52905868225565 1.5290604441896 1.13731797470721 0.430804154974802 2512090.752656895 3.58666356277061 4188.66855903952 474.710653407383 10.5926568293477 1462650.57472534 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 06:43:49 2021-Apr-13 06:43

Alternate Designations
 1995 ST48 = 1995 UU18 = 1998 CQ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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