HD 68988 has no recent radial velocity observations; the last was Nov 2001,
and it's just becoming visible now (RA = 8hr 18 min). Users
should stay tuned for further updates to the following data:

Here is the most up-to-date orbit:

P = 6.27613 +- 0.0008 d
Tp = 2451555.2841 +- 0.05
e = 0.1417 +- 0.012
om = 35.102 +- 4.5
k = 187.098 +- 3.5 m/s
dvdt = -0.075694 +- 0.007 m/s/day
a1sini= 15984176. m = 0.00010684753 AU
Mass_Fn= 4.1313218e-09 Msun
M2 sini = 1.68 M_JUP (assumes M_star=1.0 Msun)
N_obs = 14

(Keplerian fit by Geoff Marcy)

--

The planet has made 156.6 orbits since Tperiastron=Jan 11 2000, so
predictions made with the above orbit are uncertain to
about 3 hours or so. From the 2-body solution, I find that
true anomaly f=54.898 (deg) occurs 0.7393 days after
periastron passages, which means that the upcoming
central transits will occur (UT):

          JulianDate year month day hour min

transit center 2452610.38 2002 12 01 21 06
transit center 2452616.66 2002 12 08 03 43
transit center 2452622.93 2002 12 14 10 21
transit center 2452629.21 2002 12 20 16 59
transit center 2452635.48 2002 12 26 23 36
transit center 2452641.76 2003 01 02 06 14
transit center 2452648.04 2003 01 08 12 51
transit center 2452654.31 2003 01 14 19 29
transit center 2452660.59 2003 01 21 02 07
transit center 2452666.86 2003 01 27 08 44
transit center 2452673.14 2003 02 02 15 22
transit center 2452679.42 2003 02 08 22 00
transit center 2452685.69 2003 02 15 04 37
transit center 2452691.97 2003 02 21 11 15
transit center 2452698.25 2003 02 27 17 52
transit center 2452704.52 2003 03 06 00 30
transit center 2452710.80 2003 03 12 07 08
transit center 2452717.07 2003 03 18 13 45
transit center 2452723.35 2003 03 24 20 23
transit center 2452729.63 2003 03 31 03 01
transit center 2452735.90 2003 04 06 09 38
transit center 2452742.18 2003 04 12 16 16
transit center 2452748.45 2003 04 18 22 53
transit center 2452754.73 2003 04 25 05 31
transit center 2452761.01 2003 05 01 12 09
transit center 2452767.28 2003 05 07 18 46
transit center 2452773.56 2003 05 14 01 24
transit center 2452779.83 2003 05 20 08 02
transit center 2452786.11 2003 05 26 14 39
transit center 2452792.39 2003 06 01 21 17
transit center 2452798.66 2003 06 08 03 54
transit center 2452804.94 2003 06 14 10 32
transit center 2452811.22 2003 06 20 17 10
transit center 2452817.49 2003 06 26 23 47
transit center 2452823.77 2003 07 03 06 25
transit center 2452830.04 2003 07 09 13 03
transit center 2452836.32 2003 07 15 19 40
transit center 2452842.60 2003 07 22 02 18
transit center 2452848.87 2003 07 28 08 55
transit center 2452855.15 2003 08 03 15 33
transit center 2452861.42 2003 08 09 22 11


Ingress and egress are roughly 1 hour before and
1 hour after these central transit times.